Manipur Board Solutions for Chapter: Symbols, Formulas and Equations, Exercise 4: Let us answer these:

Verify whether the following equations are balanced or not? If not, balance it.

${\mathrm{KClO}}_3\to \mathrm{KCl}+{\mathrm{O}}_2\uparrow$

Verify whether the following equations are balanced or not? If not, balance it.

${\mathrm{CaCO}}_3+\mathrm{HCl}\to {\mathrm{CaCl}}_2+{\mathrm{H}}_2\mathrm{O}+{\mathrm{CO}}_2\uparrow$

Verify whether the following equations are balanced or not? If not, balance it.

${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Sodium reacts with water to produce sodium hydroxide and hydrogen gas. Write a chemical equation for the reaction.