MCAT Question of the Day
    •

    Q:

    		 Certain salts will dissolve into water exothermically while others will dissolve endothermically. Which of the following statements is true regarding the difference between these two categories of salts?
    		 

    A

    		 The exothermically-dissolving salts are spontaneous reactions while the endothermically-dissolving salts are nonspontaneous reactions.

    B

    		 The enthalpy change of exothermic reactions is positive while the enthalpy change for endothermic reactions is negative.

    C

    		 The temperature of the solution must remain constant for the dissolution reaction to continue spontaneously.

    D

    		 The entropy of the solution increases regardless of whether the dissolution is exothermic or endothermic.



    Thermochemistry |
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