CH-1214
Exothermic and endothermic reactions
Chemistry · Secondary 4 · Hard · Exothermic and endothermic reactions
A student reacts 0.0200 mol of with excess HCl in a Styrofoam cup. The solution releases 1.68 kJ of heat to the surroundings. What is the enthalpy change of reaction, in kJ/mol, for ? Include the correct sign.
- +0.084 kJ/mol
- +84 kJ/mol
- -0.084 kJ/mol
- -84 kJ/mol
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