What happens when
$(i)$ sodium metal is dropped in water?
$(ii)$ sodium metal is heated in free supply of air?
$(iii)$ sodium peroxide dissolves in water?
$(i)$ sodium metal is dropped in water?
$(ii)$ sodium metal is heated in free supply of air?
$(iii)$ sodium peroxide dissolves in water?
(N/A) $(i)$ When $Na$ metal is dropped in water,it reacts violently to form sodium hydroxide and hydrogen gas. The chemical equation involved in the reaction is:
$2 Na_{(s)} + 2 H_2O_{(l)} \longrightarrow 2 NaOH_{(aq)} + H_{2(g)}$
$(ii)$ On being heated in air,sodium reacts vigorously with oxygen to form sodium peroxide. The chemical equation involved in the reaction is:
$2 Na_{(s)} + O_{2(g)} \longrightarrow Na_2O_{2(s)}$
$(iii)$ When sodium peroxide is dissolved in water,it is readily hydrolysed to form sodium hydroxide and hydrogen peroxide. The chemical equation involved in the reaction is:
$Na_2O_{2(s)} + 2 H_2O_{(l)} \longrightarrow 2 NaOH_{(aq)} + H_2O_{2(aq)}$
$2 Na_{(s)} + 2 H_2O_{(l)} \longrightarrow 2 NaOH_{(aq)} + H_{2(g)}$
$(ii)$ On being heated in air,sodium reacts vigorously with oxygen to form sodium peroxide. The chemical equation involved in the reaction is:
$2 Na_{(s)} + O_{2(g)} \longrightarrow Na_2O_{2(s)}$
$(iii)$ When sodium peroxide is dissolved in water,it is readily hydrolysed to form sodium hydroxide and hydrogen peroxide. The chemical equation involved in the reaction is:
$Na_2O_{2(s)} + 2 H_2O_{(l)} \longrightarrow 2 NaOH_{(aq)} + H_2O_{2(aq)}$
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Similar Questions
Match the items given in Column $I$ with those in Column $II$ and select the correct option given below:
Column $I$ Column $II$ $(a)$ Tidal volume $(i)$ $2500 - 3000 \ mL$ $(b)$ Inspiratory Reserve volume $(ii)$ $1100 - 1200 \ mL$ $(c)$ Expiratory Reserve volume $(iii)$ $500 - 550 \ mL$ $(d)$ Residual volume $(iv)$ $1000 - 1100 \ mL$
| Column $I$ | Column $II$ |
| $(a)$ Tidal volume | $(i)$ $2500 - 3000 \ mL$ |
| $(b)$ Inspiratory Reserve volume | $(ii)$ $1100 - 1200 \ mL$ |
| $(c)$ Expiratory Reserve volume | $(iii)$ $500 - 550 \ mL$ |
| $(d)$ Residual volume | $(iv)$ $1000 - 1100 \ mL$ |
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