Question

Chapter 4. Question 60.

4.60

Write the balanced molecular equation and net ionic equation for the following reactions.

a) Solid aluminum hydroxide reacts with a solution of hydrobromic acid.

b) A solution of sulfuric acid reacts with solid sodium carbonate.

c) A solution of calcium hydroxide reacts with a solution of nitric acid.

d) Solid potassium oxide is dissolved in water and reacts with a solution of sulfuric acid.

Answer 1

Al(OH)3(aq)+3 HBr(aq) -------->AlBr3(aq)+3H2O (l)                   molecular reaction

Al+3+3OH- + 3H+ +3Br- -------> Al+3+ 3Br- + 3H2O (l) ionic reaction

3OH- + 3H+ --------->3H2O(l) net ionic equation

2. Ca(OH)2+ 2HNO3-------->Ca(NO3)2+ 2H2O,

Ca+2+ 2OH- + 2H+ +2NO3- ---------->Ca+2+ 2NO3- + 2H2O, ionic

2H++2OH- -------->2H2O(l)- net ionic

3. K2O+ H2SO4-------> K2SO4+ H2O (l)

2K++O-2 +2H++SO4-2 ---------->2K++SO4-2 + H2O(l)

2H+ + O^-2 -------->H2O(l)