Chemistry CuSO4 + Zn?ZnSO4+Cu is___________________? Options:A. Spontaneous reactionB. Non-spontaneous reactionC. EndothermicD. ExothermicView AnswerA. Spontaneous reaction Continue Reading Previous: Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?Next: Estimation of amounts of different components in a sample is________________?