Classify the possible combinations of signs for a reaction's ∆H and ∆S values by the resulting spontaneity.

Question

A) Spontaneous as written at all temperatures.
B) Spontaneous in reverse at all temperatures.
C) Spontaneous as written above a certain temperature.
D) Spontaneous as written, below a certain temperature.

1) ∆H = + // ∆S = +
2) ∆H = - // ∆S = +
3) ∆H = - // ∆S = -
4) ∆H = + // ∆S = -

I'm beyond confused. Please help!

Answer 1

See this link. It answers each.
http://en.wikipedia.org/wiki/Spontaneous_process

Answer 2

1)c
2)d
3)b
4)a

Answer 3

1 c
2 a
3 d
4 b

Answer 4

Paige is correct

Answer 5

Thanks page

Answer 6

Thanks Paige.

Answer 7

Thanks Paige! :D

Answer 8

Both are wrong. The wiki-link is correct.
1)b
2)d
3)a
4)3

Answer 9

Maria is right

Answer 10

u dum maria

Answer 11

我叼你妈的，一个个都是谜语人？

Answer 12

i agree with 你爸爸

Answer 13

Spontaneous as written at all temperatures: delta H=- and delta S=+

Spontaneous in reverse at all temperatures: delta H=+ and delta S= -

Spontaneous as written above a certain temperature: delta H=+ and delta S=+

Spontaneous as written below a certain temperature: delta H=- and delta S= -