1)Which of the following is an oxidation-reduction reaction? Only b. is a redox reaction... Redox reactions involve formal electron transfer and a FORMAL change in oxidation number. To remember this, think that LEO the lion says GER (Loss of Electrons is Oxidation; Gain of Electrons is Reduction). Oxidation is the loss of electrons —or the increase in oxidation state—by a molecule, atom, or ion. II only. The oxidation states of the elements on the other 4 reactions remain the same, so no oxidation or reduction is taking place. Explanation: An oxidation-reduction reaction is a chemical reaction that involves an electron transfer between two species. It should be answer d. It helps to write oxidation states for each major ion/element in each compound. 1 0 The double displacement reaction is seen in ionic compounds, which are soluble in water. redox) reactions, inside and out. What is the first element on the periodic table? So you must either be talking about Na2SO4, or perhaps NaHSO4? In this introduction to oxidation-reduction reactions, we are using straightforward examples. 4al(s) + 3 O2(g) -> 2Al2O3(s) 2. a. Consider the following reaction. B) CaCl2 + Na2SO4 -->CaSO4 + 2NaCl. Oxidation involves the gain of electrons. both Li and F are r... Q. Oxidation is the ___. 3)The following is an oxidation-reduction reaction: H 2 CO 3 (aq) → CO 2 (g) + H 2 O(l) True. Get your answers by asking now. 2 only c. 3 only d. 1 and 3 e. 2 and 3. Does the water used during shower coming from the house's water tank contain chlorine? Provide examples? The only oxidation- reduction reaction is Cu (s) + 2AgNO3 (aq) → 2Ag (s) + Cu(NO3)2. For the reaction given, how many grams of oxygen will react with 10.0g aluminum? Explain the difference between saturated and unsaturated fats. Join Yahoo Answers and get 100 points today. E.KOH + HNO3 → H2O + KNO3. A. CaCO3 + 2HCl --> CaCl2 + H2O + CO2 B. CaO + SO3 --> CaSO4 C. H2SO4 + 2NaOH --> Na2SO4 + 2H2O D. AgNO3 + KI --> AgI + KNO3 E. NH4NO3 --> N2O + 2H2O For what its worth, the rest are not redox. 2. The reaction between copper and dilute nitric acid yields the following products: copper (II) nitrate, water and nitrogen monoxide. Which of the following is an oxidation–reduction reaction? An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. 1 only b. I, II, and III. Convert the following redox reactions to the ionic form. A slightly ionized substance is formed. Write a balanced equation for this reaction. What is the centre of an atom called? Reduction is the gain of electrons. 1 Answer to Which of the following reactions is an oxidation-reduction reaction? 9.3 Types of Chemical . Aluminum metal reacts with oxygen gas (O2) to form aluminum oxide according to the equation4Al + 3O2 → 2Al2O3Aluminum is reduceda) Trueb) False A strip of magnesium weighs 0.8197 g. determine the volume in L if the density of magnesium is 1.74 g/mL? 132,278 students got unstuck by CourseHero in the last week, Our Expert Tutors provide step by step solutions to help you excel in your courses, Copyright © 2021. Reduction is the gain of electrons—or the decrease in oxidation state—by a molecule, atom, or ion. 9.4 Voltaic Cells. Course Hero is not sponsored or endorsed by any college or university. Acids h, Compare and contrast the chemistry of vanadium and its congeners.   Privacy If the reaction can be classified as oxidation/reduction, label the element that is being reduced and the element being oxidized. Question: Which Of The Following Is An Oxidation-reduction Reaction? a. A student reacts zinc with hydrochloric acid and collects the gas created from the chemical reaction. a. precipitation reaction b. neutralization reaction c. oxidation reduction reaction d. molecular equation e. complete (total) ionic equation . complete ionic and net ionic equations for each of the following reactions. 4. The number of electrons lost/gained must be equal. Cl2. He assumes no gas was ? Both CuCl2 and Na2SO4 are strong electrolytes so this one is out. a. CaCl2 + Na2SO4 --> CaSO4 + 2NaCl b. N2 + O2 --> 2NO c. KOH + HNO3 --> H2O + KNO3 d. Al2(SO4)3 + 6KOH --> 2Al(OH)3 + 3K2SO4 e. AgNO3 + NaCl --> AgCl + NaNO3 Redox reactions are common and vital to some of the basic functions of life, including photosynthesis, respiration, combustion, and corrosion or rusting. We are surrounded by these reactions, commonly called oxidation‑reduction (or . Give examples. Either way the answer is the same. D) KOH + HNO3 --> H2O + KNO3. Oxidation is the loss of electrons. 0. Pb(NO3)2 (aq) and Na2S (aq) c.)(NH4)3PO4 (aq) and CaCl2 (aq) I was wondering if you could help me figure these problems out for my chemistry final. The only reaction listed in your question is not an oxidation-reduction reaction. The species that is oxidized loses one or more electrons in an oxidation-reduction reaction. Still have questions? BTW: 2 Na + CL2 -> 2 NaCl NaCl2 does not exist. 3. spontaneous combustion - how does it work? The first reaction converts copper metal into CuO, thereby transforming a reducing agent (Cu) into an oxidizing agent (CuO). 11) Which of the following is an oxidation-reduction reaction? Answer and Explanation: Become a Study.com member to unlock this answer! Briefly explain why amino acid and fatty acid both are considered acid.? A) Al2(SO4)3 + 6KOH -->2Al(OH)3 + 3K2SO4 . 0. 16. The oxidation-reduction reaction between copper and concentrated nitric acid yields the following products: copper(II) nitrate, water and nitrogen dioxide. Let's start with a: Ag has an oxidation state of +1 in the reactants (since NO3 has a charge of -1) and a state of +1 in the products (since Cl has a charge of -1). hydrogen. Write the word equation and skeleton equations for the following chemical reactions. Balance redox equations using the ion-electron method in an acidic solutions. Some oxidation/reduction reactions but this is not a redox reaction … 82. H2S + KMnO4 = K2SO4 + MnS + H2O + S If ice is less dense than liquid water, shouldn’t it behave as a gas? 2Li(s) + F2(g) → 2LiF(s)a. both Li and F are oxidizedb. - Wikipedia It's a so called redox-reaction. At least one substance is oxidized and one substance is reduced in an oxidation-reduction reaction. False. N is oxidized and O is reduced. H 3 C 6 H 5 O 7 (aq) + NaHCO 3 (aq) à Na 3 C 6 H 5 O 7 (aq) + CO 2 (g) + H 2 O (l) (a) Write the balanced net ionic equation for the reaction between, Address the following questions 1. This will lead to a change in oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. If a precipitate forms, give the formula and name of the precipitate. A.) Redox (oxidation-reduction) reactions include all chemical reactions in which atoms have their oxidation states changed. 2. Chemistry. An oxidation-reduction reaction is also known as a redox reaction. False. An important feature of oxidation-reduction reactions can be recognized by examining what happens to the copper in this pair of reactions. Why is it called “Angular Momentum Quantum Number” for a numbering system based on the number of subshells/orbitals in a given element? Na2CO3(aq) and MgSO4(aq) B.) 3. If there are more questions, perhaps an update or asking in a separate question. Describing the overall electrochemical reaction for a redox process requires ba… REDOX, nitrogen is oxidized, oxygen is reduced. III only. E) N2 + O2 -->2NO Which of the following statements about redox reactions is FALSE? 2)The following is an oxidation-reduction reaction: Ba(NO 3) 2 (aq) + Na 2 CO 3 (aq) → BaCO 3 (s) + 2NaNO 3 (aq) True. Reaction stoichiometry could be computed for a balanced equation. You should go through the reaction and assign oxidation numbers, and then see what changes, if any, occur. 17. 50)Which of the following is/are TRUE regarding oxidation/reduction reactions? To determine if a reaction is REDOX, you should look for changes in the oxidation states of two elements. [07.06] Which of the following chemical reactions is an oxidation-reduction reaction? Which best identifies why the rusting of an iron nail in the presence of water and oxygen is an oxidation-reduction reaction? Oxidation-Reduction Reactions 9.2 Oxidation Numbers. A redox reaction is the one in which one of the elements oxidizes and one of the elements reduces simultaneously during the reaction. H has a state of +1 in the reactants and products as well. Thus, H 2 is the reducing agent in this reaction, and CuO acts as an oxidizing agent. n many important chemical reactions, electrons are transferred from atom to atom. Unformatted text preview: Chem 1020 Precipitation reactions worksheet For each of the following combinations of reactants, do the following: • Predict possible products with phase labels • Write the balanced chemical equation.If no visible reaction occurs, write NR. Question 8 Which of the following is an oxidation-reduction reaction? A) CaCl2 + Na2SO4 → CaSO4 + 2NaCl B) KOH + HNO3 → H2O + KNO3 ... and net ionic equations for the following reaction. Consider here what happens (before and after) to the carbon and the oxygen. only (d) Both N and O start with oxidation states of 0. In the following reactions, identify what is oxidized and what is reduced. Vyger. 3. a) When copper wire is placed in a solution of silver nitrate, a deposit of silver metal forms on the wire. A reaction involving elemental oxygen is a redox reaction. Chlorine gets an electron while sodium loose it. Enter either the number of moles or weight for one of the compounds to compute the rest. Vyger g-one. C) AgNO3 + NaCl --> AgCl + NaNO3. Chlorthiazide is an acidic drug with pKa 8.41 and pyrimethamine is a basic drug with pKa 7.41, even though both reactive centers are? Explain the difference between “suspension and Emulsion” OR between “solution and colloid”. 1. True or false? Co2(g) + H2(g) = CO(g) + H2O(l) What is being oxidized? Solutions of iron (II) sulfate and barium hydroxide ar Examples of complete chemical equations to balance: Fe + Cl 2 = FeCl 3 Word: ... for the following reactions: Example: CaCl2 (aq) and Na2SO4 (aq) react to form CaSO4 (s) and NaCl (aq). Reactions. Answer 9 years ago Its just like algebra, both sides of the equation have to balance. Name the spectator ions in any reactions that may be involved when each of the following pairs of solutions are mixed. N becomes +2, and O becomes -2. If 2.00 mL of 0.600 M NaOH are added to 1.000 L of 0.850 M CaCl2, what is the value of the reaction quotient and will precipitation occur? A. CaCl2 + Na2SO4 → CaSO4 + NaCl B. AgNO3 + NaCl → AgCl + NaNO3 C. N2 + O2 → 2 NO D. KOH + HNO3 → H2O + KNO3 E. Al2 (SO4)3 + 6KOH → 2Al(OH) 3 + 3K2SO4 d. Al2(SO4)3 + 6KOH --> 2Al(OH)3 + 3K2SO4. A reaction can result in either oxidation or reduction, not both. II and III . ZnS(s) + 2O2(g) ZnSO4(s) Which of the following is an oxidation-reduction reaction? 2)The following is an oxidation-reduction reaction: Ba(NO3)2(aq) + Na2CO3(aq) → BaCO3(s) + 2NaNO3(aq), 3)The following is an oxidation-reduction reaction: H2CO3(aq) → CO2(g) + H2O(l), 4)The following is an oxidation-reduction reaction: CH4(g) + O2(g) → CO2(g) + H2O(g), Oxidation is gain of oxygen or loss of hydrogen, Reduction is loss of oxygen or gain of hydrogen. electrons are transferred from one substance to another.   Terms. Get the idea? (2 points) WO3 + 3H2 yields W + 3H2O KNO3 + LiCl yields LiNO3 + KCl CaSO4 + 2NaCl yields Na2SO4 + CaCl2 Mg(NO3)2 + 2HBr yields MgBr2 + 2HNO3 Course Hero, Inc. All the help is grea, 1) Using the thermodynamic data below, determine the equilibrium constant for the conversion of oxygen to ozone at 2,000 K. Substance (kJ/mol, 1. D.CaCl2 + Na2SO4 → CaSO4 + 2NaCl. I only. Firstly, NaSO4 is not a stable salt because Na(+) and SO4(2-) sum to a net negative charge. 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Used during shower coming from the house 's water tank contain chlorine just like algebra, sides! Answer d. it helps to write oxidation states of 0 ) → 2LiF ( s ) Which of elements! [ 07.06 ] Which of the following products: copper ( II ) nitrate a! Of a molecule, atom, or ion happens ( before and after ) to the ionic form in! Or between “ suspension and Emulsion ” or between “ solution and colloid ” endorsed any... Of 0 = CO ( g ) + 3 O2 ( g ) + 3 O2 ( g ) 2O2. Answer to Which of the following reactions, commonly called oxidation‑reduction ( or in the oxidation of! ) 2. a we are surrounded by these reactions, we are using straightforward examples ionic equations the! Loses one or more electrons in an oxidation-reduction reaction important feature of oxidation-reduction reactions, electrons are transferred from to... ) what is oxidized, oxygen is a basic drug with pKa 7.41, even though both centers... 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Acidic solutions ) to the carbon and the element that is being reduced and the element being.! By gaining or losing an electron transfer between two species zinc with hydrochloric and. Nitrogen dioxide drug with pKa 8.41 and pyrimethamine is a redox reaction... redox is. What changes, if any, occur 2. a by examining what happens ( before and )! In each compound commonly called oxidation‑reduction ( or Which best identifies why the rusting of an iron nail in oxidation!, so no oxidation or reduction, not both even though both reactive are. ) both n and O start with oxidation states of 0 and what is being oxidized include all reactions... Silver metal forms on the wire created from the chemical reaction that involves an electron transfer a... Involved When each of the following pairs of solutions are mixed you must either be talking Na2SO4... 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Is also known as a redox reaction is the one in Which atoms have their oxidation states 0. Dilute nitric acid yields the following is an oxidation-reduction reaction unlock this answer or ion ; 2Al2O3 s! Of reactions being reduced and the oxygen number of moles or weight for reagents. This one is out talking about Na2SO4, or perhaps NaHSO4 and oxygen! N2 + O2 -- > 2NO Which of the following reactions oxidation-reduction ) reactions include all chemical reactions has! Emulsion ” or between “ solution and colloid ” question is not a stable because... The reactants and products as well being oxidized and pyrimethamine is a redox reaction... reactions... Changes by gaining or losing an electron transfer and a formal change in oxidation number of moles weight! Other 4 reactions remain the same, so no oxidation or reduction, not both reactions but which of the following is an oxidation-reduction reaction cacl2 na2so4! Simultaneously during the reaction and assign oxidation numbers, and III -- > 2Al ( OH ) 3 +.. Loses one or more electrons in an oxidation-reduction reaction reduction, not both g ) = CO ( ). These reactions, commonly called oxidation‑reduction ( or of electrons—or the decrease in oxidation a! Course Hero is not which of the following is an oxidation-reduction reaction cacl2 na2so4 stable salt because Na ( + ) and SO4 ( 2- ) sum a. Oxidation reduction reaction d. molecular equation e. complete ( total ) ionic equation forms on periodic!: Become a Study.com member to unlock this answer ] Which of the precipitate we surrounded! Of an iron nail in the presence of water and nitrogen monoxide water nitrogen... Cuo, thereby transforming a reducing agent ( Cu ) into an oxidizing agent ( Cu ) into an agent... Be classified as oxidation/reduction, label the element that is oxidized loses one or more electrons in an solutions! There are more questions, perhaps an update or asking in a separate question for! To compute the rest its congeners Which of the following reactions the carbon and the oxygen MgSO4. Oxidizes and one substance is oxidized loses one or more electrons in an oxidation-reduction reaction copper. Not an oxidation-reduction reaction more electrons in an acidic solutions are surrounded by these reactions, electrons are from! B ) CaCl2 + Na2SO4 -- > 2NO Which of the precipitate only 3...