Question

Balance the equations

Answer 1

Answer: a) $H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O$

b) $PCl_3+3H_2O\rightarrow P(OH)_3+3HCl$

c) $2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

The balanced chemical equations are :

$H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O$

$PCl_3+3H_2O\rightarrow P(OH)_3+3HCl$

$2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2$