Question

2hcl + mg → mgcl₂ + h₂
what is the heat of the reaction?
qₛₒₗₙ = +9240 j
qᵣₓₙ = − qₛₒₗₙ
qᵣₓₙ = ? j
enter either a + or - sign and the magnitude.
notice this example does not have a calorimeter constant calculation.

Explanation:

Step1: Identify the formula

We know that \( q_{\text{rxn}} = - q_{\text{soln}} \).

Step2: Substitute the value of \( q_{\text{soln}} \)

Given \( q_{\text{soln}} = +9240 \) J, substitute into the formula: \( q_{\text{rxn}} = - 9240 \) J.

Answer:

-9240