Consider the reaction I2( s )+2Br( a q )2I( a q )+Br2( l ); G =1.1×10^5J. The ca

Question

Consider the reaction I2(s)+2Br(aq)2I(aq)+Br2(l); G=1.1×10^5J. The calculation revealed that the reaction is not spontaneous. Based on conceptual reasoning, which of the following best explains why I2 does not oxidize Br?

a. I is more electronegative than Br; therefore, we do not expect I2 to give up an electron to Br. b. Br is more electronegative than I; therefore, we do not expect Br to give up an electron to I2 . c. Br is in solution and I2 is a solid. Solids do not gain electrons from substances in solution.

Explanation / Answer

b. Br is more electronegative than I; therefore, we do not expect Br to give up an electron to I2 .

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