Explain reaction is exothermic and entropy , Physics

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A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected):

A   The total entropy (system + surrounding) increases.

B   The entropy change of the surroundings is negative.

C   The reaction is exothermic.

D   The entropy of the system increases. 

 


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