Question

The value of H° for the reaction below is -72 kJ. ________ kJ of heat are released when 5.5 mol of HBr is formed in this reaction.

Answer 1

-198 kJ

Step-by-step explanation:

Hello there!

In this case, as the reaction is not given but we can see that HBr is formed, we can infer that reaction is:

`H_2+Br_2\rightarrow 2HBr`

Whereas the -72 kJ per moles of HBr are:

`(-72kJ)/(2molHBr)`

Thus, by multiplying by the formed 5.5 moles of HBr, the total energy release is:

`(-72kJ)/(2molHBr) *5.5molHBr\\\\=-198kJ`

Best regards!