$2.5$ g of the carbonate of a metal was treated with $100$ mL of $1$ N $\text{H}_2\text{SO}_4$. After the completion of the reaction, the solution was boiled off to expel $\text{CO}_2$ and was then titrated against $1$ N $\text{NaOH}$ solution. The volume of alkali that would be consumed, if the equivalent weight of the metal is $20$