Mentify the following reactions as either a precipitation reaction ackd-base neutralization reaction, or oxidation-reduction (or redox (2 pts, each) ) reaction. a. Zn (s) . 2 HC? (aq)-. Znch (aq) + H2 (g) b 2 HCIO (aq)+Ba(OH): (aq) Ba(CIOs(ag)+2 H2o(e) c Cack (aq) Na COs (ag) Caco, (s)+2 NaCI (aq) d. Fe (s)+CuSO (aq)FeSO4 (aq)+ Cu (s) 3. Write the oxidation numbers for each element in the following. (1 pt. each) a. As b. Al(CIOs) c. SrBr2 d. S2032- Solution Ans 2 : a) the oxidation of Zn is increased from 0 to +2 , and that of hydrogen is decreased from +1 to 0. So its a redox reaction. b) The reaction involves the acid and base , which react together to form salt and water. So the reaction is called as acid - base neutralization reaction. c) The reaction causes the formation of a precipitate ( CaCl2) , hence the reaction is called as precipitation reaction. d) In this reaction Fe is getting oxidised from 0 to +2 and Copper is getting reduced from +2 to 0 . So the reaction is called as redox reaction. .

1. Mentify the following reactions as either a precipitation reaction ackd-base neutralization
reaction, or oxidation-reduction (or redox (2 pts, each) ) reaction. a. Zn (s) . 2 HC? (aq)-. Znch
(aq) + H2 (g) b 2 HCIO (aq)+Ba(OH): (aq) Ba(CIOs(ag)+2 H2o(e) c Cack (aq) Na COs (ag)
Caco, (s)+2 NaCI (aq) d. Fe (s)+CuSO (aq)FeSO4 (aq)+ Cu (s) 3. Write the oxidation numbers
for each element in the following. (1 pt. each) a. As b. Al(CIOs) c. SrBr2 d. S2032-
Solution
Ans 2 :
a) the oxidation of Zn is increased from 0 to +2 , and that of hydrogen is decreased from +1 to 0.
So its a redox reaction.
b) The reaction involves the acid and base , which react together to form salt and water.
So the reaction is called as acid - base neutralization reaction.
c) The reaction causes the formation of a precipitate ( CaCl2) , hence the reaction is called as
precipitation reaction.
d) In this reaction Fe is getting oxidised from 0 to +2 and Copper is getting reduced from +2 to 0
. So the reaction is called as redox reaction.