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Which reactions are spontaneous? i. c2h5oh(l) 3o2(g) right arrow. 2co2(g) 3h2o(l), delta.g = –36.7 kj ii. 2c6h6(l) 15o2(g) right arrow. 12co2(g) 6h2o(l), delta.g = –6,405 kj iii. caco3(s) right arrow. cao(s) co2(g), delta.g = 13.0 kj iv. ni(s) cl2(g) right arrow. nicl2(s), delta.g = 1,130.28 kj i and ii iii and iv i and iii ii and iv

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mickymike92

Reactions I and II are spontaneous reactions since they have negative delta G values.

What are spontaneous reactions?

Spontaneous reactions are reactions which proceed towards formation of products without addition of heat energy from the surroundings.

Spontaneous reactions have negative free energy change values (Delta G is negative) since the formation of products results in increase in entropy of the system.

Therefore, the spontaneous reactions are I and II because their delta G values are negative.

Learn more about spontaneous reactions at: https://brainly.com/question/24376583

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