34.1 kj of heat is released when 5 moles of a gaseous substance condenses. what is the heat of condensation…

34.1 kj of heat is released when 5 moles of a gaseous substance condenses. what is the heat of condensation? -171 kj/mol -6.82 kj/mol 6.82 kj/mol 171 kj/mol

34.1 kj of heat is released when 5 moles of a gaseous substance condenses. what is the heat of condensation? -171 kj/mol -6.82 kj/mol 6.82 kj/mol 171 kj/mol

Answer

Explanation:

Step1: Recall heat - of - condensation formula

Heat of condensation ($\Delta H_{cond}$) = $\frac{q}{n}$, where $q$ is the heat released and $n$ is the number of moles.

Step2: Identify values of $q$ and $n$

$q=- 34.1\ kJ$ (negative because heat is released) and $n = 5\ mol$.

Step3: Calculate heat of condensation

$\Delta H_{cond}=\frac{-34.1\ kJ}{5\ mol}=-6.82\ kJ/mol$

Answer:

B. $-6.82\ kJ/mol$