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Extraction of Iron

46. The molar...

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46. The molar heat capacities for the process shown in figure is 1. C=Cp 2. C=Cv 3. C>Cv 4. C=0

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Q. Does a solid also have two kinds of molar heat capacities C_p and C_v? If yes, is C_p > C_v? Or is C_p − C_v = R?

An ideal gas undergoes a quasi static, reversible process in which its molar heat capacity C remains constant. If during this process the relation of pressure P and volume V is given by $P V^{n}$ = constant, then n is given by (Here $C_{P}$ and $C_{V}$ are molar specific heat at constant pressure and constant volume, respectively):

Q. For hydrogen gas

C_{p} - C_{v} = a

and for oxygen gas

C_{p} - C_{v} = b

C_{p}

C_{v}

are molar specific heats. Then the relation between 'a' and 'b' is

H_{2}

C_{p} - C_{v} = a

O_{2}

C_{p} - C_{v} = b

C_{p}

C_{v}

are heat capacity in cal/g-K, then select the correct reaction.

Q. Let C_v and C_p denote the molar heat capacities of an ideal gas at constant volume and constant pressure respectively. Which of the following is a universal constant?
(a)

\frac{C_{p}}{C_{v}}

(b) C_pC_v
(c) C_p − C_v
(d) C_p + C_v

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