问答题 Compare an electrochemical cell with an electrolytic cell by completing the following table:

	Electrochemical Cell	Electrolytic Cell
Energy Conversion
Spontaneous Chemical Reaction?
Value of E^{ominus }(positive or negative)

【正确答案】

	Electrochemical Cell	Electrolytic Cell
Energy Conversion	chemical→electrical	electrical→chemical
Spontaneous Chemical Reaction?	yes	no
Value of E^{ominus }(positive or negative)	positive	negative

【答案解析】