Question

The molar heat capacities at constant pressure (assume constant with respect to temperature) of A, B and C are in ratio of $1.5:3.0:2.0$. If enthalpy change for the exothermic reaction $A+2B\to 3C$ at $300K$ is $-10kJ/mol$ and $C_{p,m}\left(B\right)$ is $300J/mol$ then enthalpy change at $310K$ is:

• A. $-8.5kJ/mol$
• B. $8.5kJ/mol$
• C. $-11.5kJ/mol$
• D. none of these

Answer 1

The correct option is C $-11.5kJ/mol$

Here the answer is wrong, and the correct answer is option(C).

Solution:

Hence,$-11.5kJ/mol$ is the answer.