Arturo O. answered • 06/05/16
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You need to know how much calcium chloride is dissolving in the water, and you need the heat of dissolving calcium chloride in water. From tables, you can find the heat of dissolving calcium chloride in water:
q = -82.9 kJ / mol
The negative sign means the reaction is exothermic; it releases heat into the environment.
You need the number of moles of calcium chloride that you dissolve in the water. Call it n.
Then Q = nq = n * (-82.9 kJ/mol) = number of kJ transferred out of the solution.
The question did not state how much calcium chloride is being dissolved, so I cannot give you a complete answer.
I hope this helps.
q = -82.9 kJ / mol
The negative sign means the reaction is exothermic; it releases heat into the environment.
You need the number of moles of calcium chloride that you dissolve in the water. Call it n.
Then Q = nq = n * (-82.9 kJ/mol) = number of kJ transferred out of the solution.
The question did not state how much calcium chloride is being dissolved, so I cannot give you a complete answer.
I hope this helps.
