29 The sublimation of solid carbon dioxide is a spontaneous process. Predict the sign (+, -, or 0) of ΔGr°, ΔHr°, and ΔSr°, respectively.(A)-,0,+(B)-,-,-(C)-,+,+(D)0,+,+(E)-,+,-

36 Which of the following statements regarding the effect of a catalyst on a reaction is not true?(A)A catalyst has no effect on the equilibrium composition of the reaction.(B)A catalyst provides a lower activation energy for the reaction.(C)When a reaction is catalyzed, both forward and reverse reactions are accelerated.(D)A catalyst speeds up a reaction by providing an alternate pathway for the reaction.(E)When a catalyst speeds up a reaction, the rate law remains the same.

29 The sublimation of solid carbon dioxide is a spontaneous process. Predict the sign (+, -, or 0) of ΔGr°, ΔHr°, and ΔSr°, respectively.

(A)-,0,+

(B)-,-,-

(C)-,+,+

(D)0,+,+

(E)-,+,-

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