Question

The heat change that accompanies the formation of 1.00 mol of carbon dioxide from its elements is −393.7 kJ/mol. What heat change accompanies the formation of 0.631 mol CO2?

Answer 1

Answer:

-248.425 kJ/mol

Explanation:

This question can be done by simply taking the ratios:

Since the given the heat change for 1.00 mol of $CO_2$ is -373.7 KJ/mol. Let us consider the required Heat Exchange at 0.631 mol of

We can write:

$\frac{-373.7} {1.00} = \frac{x}{0.631}$

$x = ( -373.7)(0.631)$

$x = -248.425$ KJ/mol