Question

Balance the following chemical equations.
(a) HNO 3 + Ca(OH) 2 —— Ca(NO 3 ) 2 + H 2 O
(b) NaOH + H 2 SO 4 —— Na 2 SO 4 + H 2 O
(c) NaCl + AgNO 3 —— AgCl + NaNO 3
(d) BaCl 2 + H 2 SO 4 —— BaSO 4 + HCl
(e) H 2 + O 2 —— H 2 O

Answer 1

Answer:

(a) 2 \mathrm{HNO}_{3}+\mathrm{Ca}(\mathrm{OH})_{2} \rightarrow \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}+2 \mathrm{H}_{2} \mathrm{O}2HNO

3

+Ca(OH)

2

→Ca(NO

3

)

2

+2H

2

O

(b) 2 \mathrm{NaOH}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{Na}_{2} \mathrm{SO}_{4}+2 \mathrm{H}_{2} \mathrm{O}2NaOH+H

2

SO

4

→Na

2

SO

4

+2H

2

O

(c) \mathrm{NaCl}+\mathrm{AgNO}_{3} \rightarrow \mathrm{AgCl}+\mathrm{NaNO}_{3}NaCl+AgNO

3

→AgCl+NaNO

3

(d) \mathrm{BaCl}_{2}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{BaSO}_{4}+2 \mathrm{HCl}BaCl

2

+H

2

SO

4

→BaSO

4

+2HCl