Question

When $50c{m}^3$ of a strong acid is added to $50c{m}^3$ of an alkali, the temperature rises by $5^{o}C$. If $250c{m}^3$ of each liquid is mixed, the temperature rise would be:

• A. $5^{o}C$
• B. ${10}^{o}C$
• C. ${25}^{o}C$
• D. ${20}^{o}C$

Answer 1

The correct option is A $5^{o}C$

In a chemical reaction, reagents always react in the same gram equivalent amount, so the temp rise would be always same.

Temperature rise $\left(250c{m}^3\right)$ each = Temperature rise $\left(50c{m}^3\right)$ each,

So answer is [A].