## Ideal gases

Jordan_Wesson_2J
Posts: 59
Joined: Fri Sep 28, 2018 12:26 am

### Ideal gases

If you were given the specific heat capacity of an ideal gas at constant pressure or volume would that be the same as calculate 5/2*R or 3/2*R, respectively? If so which is more accurate?

Nicolette_Canlian_2L
Posts: 77
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

### Re: Ideal gases

rather than just using the ideal gas constant, you use 5/2R and 3/2R as the constants depending on whether volume or pressure is constant.

Helen Zhao 1F
Posts: 31
Joined: Fri Sep 28, 2018 12:20 am

### Re: Ideal gases

If you were given the specific heat capacity I would use the given value but it should equal 5/2 R if pressure is constant and 3/2R if volume is constant.

LaurenJuul_1B
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

### Re: Ideal gases

5/2 is for when pressure is constant and 3/2 is for when volume is constant

Jack Hewitt 2H
Posts: 67
Joined: Fri Sep 28, 2018 12:27 am

### Re: Ideal gases

You should use 5/2R if pressure is constant and 3/2R if volume is constant.

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