For a reaction, AH = 176 kJ/mol and A SO = 0.285 kJ/(K•mol). At what temperatures is this reaction spontaneous?
A. At no temperature
B. T< 50 K
C. T>617 K
D. T< 617 K

C. T>617 K

Explanation:

We are given that

We have to find the temperature at which the reaction is spontaneous.

When

Therefore, the reaction is spontaneous at certain range of temperature.

Option A is not true.

When is negative, then  the reaction is spontaneous.

When T<50

Suppose T=49 K

Therefore, .Hence, the  reaction is not spontaneous.

Option B is wrong.

C.T>617K

Suppose T=618 K

Therefore, .Hence, the  reaction is spontaneous.

So, option C is true.

D.T<617 K

Suppose T=616 K

Therefore, .Hence, the  reaction is not spontaneous.

So, option D is not true.

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation: