Question $6$: An active metal is chemically reactive. Metals of group $1$A$,2$A are active metals. These metals react with hydrochloric acid to produce hydrogen gas. Suppose you have an active metal such as calcium. You react it with hydrochloric acid in a long glass tube that is sealed at one end. You collect the hydrogen gas and measure its volume and other data.

$Ca(s)+HCl(aq)CaC{l}_2(aq)+H_2(g)$

Here is the data you obtained: Volume of gas collected in the gas buret: $525mL.$

Temperature of the gas and water: $25\mathrm{.}0C.$

Barometric pressure: $0\mathrm{.}926$atm

Given:

Partial pressure of $H_{2}O=23\mathrm{.}8$ torr

$R=0\mathrm{.}0821L.at\frac{m}{m}ol.K$

Ideal gas equation: $PV=nRT$