A solution of a substance $‘X’$ is used for whitewashing.

$(i)$ Name the substance $‘X’$ and write its formula.

$(ii)$ Write the reaction of the substance $‘X’$ named in $(i)$ above with water.

Vedclass pdf generator app on play store
Vedclass iOS app on app store

$(i)$ The substance $'X'$ is calcium oxide. Its chemical formula is $CaO$.

$(ii)$ Calcium oxide reacts vigorously with water to form calcium hydroxide (slaked lime).

$\underset{\begin{smallmatrix} 
 Calcium\text{ }oxide \\ 
 \left( Quick\text{ }lime \right) 
\end{smallmatrix}}{\mathop{Ca{{O}_{(s)}}}}\,+\underset{Water~}{\mathop{{{H}_{2}}{{O}_{(l)}}}}\,\to \underset{\begin{smallmatrix} 
 ~Calcium\text{ }hydroxide~ \\ 
 \text{ }\left( Slaked\text{ }lime \right) 
\end{smallmatrix}}{\mathop{Ca{{(OH)}_{2\left( aq \right)}}}}\,$

Similar Questions

Write the balanced equation for the following chemical reactions.

$(i)$ Hydrogen $+$ Chlorine $\to $ Hydrogen chloride

$(ii)$ Barium chloride $+$ Aluminium sulphate $\to $ Barium sulphate $+$ Aluminium chloride

$(iii)$ Sodium $+$ Water $\to $  Sodium hydroxide $+$ Hydrogen

Explain the "Oxidation'' in terms of gain or loss of oxygen with two examples.

Explain the ''Rancidity'' terms with one example.

What is a balanced chemical equation ? Why should chemical equations be balanced ?

What does one mean by exothermic and endothermic reactions ? Give examples.