Question

1. Classify each of the following reactions as OR (oxidation-reduction), SR (single replacement), DR (double replacement), C (combination), D (decomposition) reactions. If a reaction falls into more than one classification, you need to indicate them all. Classification Reaction: a) 4 HNO3 (aq)+ Cu (s) Cu(NO3)2 (aq)+2 NO2 (g) +2 H20 (1) b) Cu(NO3)2 (aq) + 2 NaOH (aq) Cu(OH)2 (s) + 2 NaNO3 (aq) c) Cu(OH)2 (s) + heat > CuO (s)+ H20 1) d) Cuo (s) + 2 HCI (aq)CuC12 (aq) + H20 (1) e) CuCl2 (aq) + Mg (s) MgCl2 (aq)+ Cu (s)

use e.) to answer #4

Answer 1

Oxidation-reduction reaction: Herein oxidation number of element changes

Single replacement reaction: An element in reactant replaces another element from the second reactant (compound)

Double replacement reaction: Two compounds reacts to form two new products, where the cation and anion of reactants are exchanged.

Combination reaction: Two or more reactants combine to form a new product

Decomposition reaction: A reactant decompose to form two or more products.

Ho dissecinles to NO and 2 0 so, t ix so this is double deewtMthe MALhoy 4

claiiae DR , Mg changes oxidahon yale trou u no of eu changes fro*t T2 to O

13 24 305 lu fV 0 W M.IN , Df苎二2.0 gouef-l e (6 02 x1d3x 2.0572 x1o3) 2 l