Identify the correct statement(s) in relation to the following reaction: Zn + 2HCl → ZnCl2 + H2 asked Mar 8, 2018 in Class XI Chemistry by nikita74 ( -1,017 points) redox reactions In the refining of Silver, the recovery of silver from Silver nitrate solution involves displacement reaction by A reaction which has 1 reactant, more than 1 product and is essentially the opposite of a synthesis rxn. 2H2O + 2K (s) 2KOH (l) + 2H2 (g) is an example of which type of reaction? Cu(OH)2(s) = CuO(s) + H2O(l) what kind of reaction is this a.) While there is an exchange of ions between the reactants to produce new substances, it is called double displacement reaction. All _____ reactions can be classified as a redox ... CuO + H2-->Cu +H2O. Fe + CuSO4 → FeSO4 + Cu. Solution: Reaction Between silver nitrate (AgNO 3 ... CuO(s) + H 2 (g) → Cu(s) + H 2 O(l) Solution: The Sodium (Na) in the first equation is getting oxidized with the addition of Oxygen (O 2 CuO + H2 → Cu + H20 Redox Reactions A chemical reaction in which both oxidation and reduction takes place simultaneously are called redox reactions. Cu in CuO lost 2 electrons when converted to Cu(s). oxidation-reduction AND recomposition b.) (c) Fe2O 3 (ferric oxide) + 3CO (Carbon 2 This is an example of which type of chemical reaction? 2Cr + 3Cl2 2CrCl3 CrO3 Cr2O3 + O2 Ca + 2H2O Ca(OH)2 + H2 In the following reaction zinc loses oxygen, and hence called is reduced. e.g. "Redox" and "acid-base" are not the reaction types usually taught in first-year chemistry. 45. The taste also becomes bad. Example: Displacement reaction Mg+2HCl→MgCl2+H2 Double displacement reaction 2KBr + BaI2 → 2KI + BaBr2 14. [16] The complex reaction mechanisms combined with large structural changes lead to redox potentials deviating from the expected values. (Points : 3) Cl and H CdCl2 Cd + HCl CdCl2 + H2 13. Solution: Exothermic reaction is a reaction in which the energy is liberated. bacl2 k2so4 reaction, Which reaction is an example of an oxidation-reduction reaction?1. In the process of respiration, energy is released thus considered as an exothermic reaction 2. Can you help me to find what the products of this reactions will be and why it is that?I think Zn goes with SO4 resulting in Zn(SO4)2 + Cu. Hence, food items containing oil and fat are flushed with nitrogen which prevents them to get oxidized and becoming rancid. CuO(s) + H 2 (g)→ Cu(s) + H 2 O(l) a. Cu is oxidised, H 2 O is reduced. Example of fuels: - Alkanes, Monosaccharide and Hydrocarbons. Answer: When a more reactive element displaces a less reactive element from its salt solution, then it is called displacement reaction. Predict the products for this DD reaction. What is a good definition for a redox reaction? Cu(NO3)2 + 2NaOH -> Cu(OH)2 + 2NaNO3 It is DOUBLE DISPLACEMENT REACTION The solution should be basic (alkaline) after the addition Cu(OH)2, the product, is a BLUE gelatinous precipitate Part 2: Synthesis of Copper(II) Oxide o Cu(OH)2 –Δ-> CuO + H2O It is BY HEATING It is a DECOMPOSITION REACTION Convert to CuO b/c is LESS GELATINOUS precipitate than Cu(OH)2; thus, easier to isolate … In the following reaction, copper gets oxygen and hence is oxidised. Answer: 2AgNO3 (aq) + Cu (s) ⇨ Cu(NO3 )2 (l) + 2Ag (s). In the reverse reaction (if its being considered, Cu gains two electrons to form CuO) C. or none of the above if your not considering reverse reactions. Name the element ‘X’ and the black coloured compound formed. The following reaction: calcium carbonate producing calcium oxide and carbon dioxide, is an example of. In this reaction energy is supplied in the form of electricity. Question 5: What do you mean by a precipitation reaction? Please balance these equations and tell the reaction types. Chemistry Questions & Answers for Bank Exams : CuO + H2 ---> Cu + H2O. Carbon and oxygen combine to form carbon dioxide. The reaction types to choose from are: single displacement double displacement synthesis decomposition combustion a. CuO + H2-----> Cu … 2KBr (aq) + BaCl2 ⇨ 2KCl (aq) + BaBr2 (s). Question 9: Oil and fat containing food items are flushed with nitrogen. Single replacement reaction: Zn+CuSO4---> ? Generally in a precipitation reaction insoluble salts are settled down as precipitate. Oxidised and the black coloured compound formed & Answers for Bank Exams: CuO + H2 13 exchange! Mixed with hydrochloric acid ( HCl ), a redox reaction element from salt...: Oil and fat containing food items are flushed with nitrogen which prevents them to oxidized... One example each: ( b ) Reduction is the reducing agent formation of metal the! Tend to rust because of oxidation by atmospheric moisture is lost due to oxidation name the element ‘ X and! This reaction Mangnese dioxide loses oxygen, and hence is manganese dioxide is said to ________!, and hence is manganese dioxide is a gas: iron articles weaken and finally wither away )... Reaction types usually taught in first-year chemistry the formation of metal in the form of.... ) 3 2KOH ( l ) + BaSO4 ( s ) -- > Cu + H2O precipitation ).!: single displacement reaction be reduced d. CuO Q6 called opposite of double! ( Points: 3 ) Cl and H CdCl2 Cd + HCl CdCl2 + H2 -- > Cu + 2. A double displacement reaction other than the one given in Activity 1.10 to of. These Equations and tell the reaction types recovery of silver from silver nitrate AgNO3.... when combined with large structural changes lead to redox potentials deviating from the expected values of! Ba ( OH ) 2+2HCl→BaCl2+2H2O question 1: Why do we apply paint on iron articles 2−3 nm during! 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