Question

Slaking of lime is a compound-compound combination reaction.

• A. True
• B. False

Answer 1

The correct option is A True

• Combination reaction- A reaction where two or more elements or compounds (reactants) combine to form a single compound (product).
• Combination of elements and compounds can be in different ways. such as-

a) Element - element combination - Example ${\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\to 2{\mathrm{NH}}_3\left(\mathrm{g}\right)$

b) Element - compound combination - Example- $2{\mathrm{SO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to 2{\mathrm{SO}}_3\left(\mathrm{g}\right)$

c) Compound-compound combination- Example-$$\begin{gathered} \mathrm{CaO}\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to \mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)+\mathrm{heat} \\ \mathrm{Quicklime}\mathrm{water}\mathrm{slaked}\mathrm{lime} \end{gathered}$$

Therefore slaking of lime is a compound-compound combination reaction and the given statement is true.