An exothermic process releases heat (warms up), and an endothermic process absorbs heat (cools down). Which solutions are endothermic and which are exothermic? What is the sign of the change in enthalpy, H, in each case?
Which solution(s) had little or no change in temperature?
When sodium chloride dissolves in water, the ions dissociate:
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An exothermic process releases heat (warms up), and an endothermic process absorbs heat (cools down)...
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