Answered>Order 103

7.2 Classifying Chemical Reactions

12. Use the following equations to answer the next four questions:

i. H2 O(s) ? H2 O(l)

ii. Na+(aq) + Cl?(aq) + Ag+(aq) + NO3

?(aq) ? AgCl(s) + Na+(aq) + NO3

?(aq)

iii. CH3 OH(g) + O2(g) ? CO2(g) + H2 O(g)

iv. 2H2 O(l) ? 2H2(g) + O2(g)

v. H+(aq) + OH?(aq) ? H2 O(l)

(a) Which equation describes a physical change?

(b) Which equation identifies the reactants and products of a combustion reaction?

(c) Which equation is not balanced?

(d) Which is a net ionic equation?