(50cm^{3}) of hydrogen are sparked with (20cm^{3}) of oxygen at (100°C) and (1atm) . The…

(50cm^{3}) of hydrogen are sparked with (20cm^{3}) of oxygen at (100°C) and (1atm) . The total volume of the residual gases in

Correct Answer: Option A

Explanation

The equation of the reaction is:

(2H_{{2}{(g)}} + O_{{2}{(g)}} = 2H_{2}O_{(g)})

Before Sparking we have : (50cm^{3} : 20cm^{3})

On Sparking, (40cm^{3} : 20cm^{3} : 40cm^{3})

After Sparking, we have (10cm^{3} : 0  : 40cm^{3})

Hence, the volume of residual gases = ((10+40)cm^{3} = 50cm^{3})