Question

The amount of heat evolved when $500 \, cm^3$ of $0.1 \, M \, HCl$ is mixed with $200\,cm^3$ of $0.2 \, M \, NaOH$ is

• A. $1.292\, kJ$
• B. $2.292\, kJ$
• C. $0.292 \, kJ$
• D. $22.9\, kJ$

Answer 1

Answer: (B)

$2.292\, kJ$

Answer 2

No. of equivalents of $NaOH$ reacting $=\frac{40}{1000}$ $1 eq =57.3$ $\frac{40}{1000} eq =\frac{57.3 \times 40}{1000}=2.292\, kJ$