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An stoichiometric mixture of hydrogen ga...

An stoichiometric mixture of hydrogen gas and the air at `25^(@)C` and a total pressure of 1 atm, is exploded in a closed rigid vessel. If the process occurs under adiabatic condition then using the given data answer the question that follow:
Given : (i) `C_(P)=8.3" Cal deg"^(-1)" mol"^(-1), (ii) C_(P)=11.3" Cal deg"^(-1)" mol"^(-1), DeltaH_(f) [H_(2)O(g)]= -57.8 kCal`
[Take air as `80% N_(2), 20 % O_(2)` by volume]
The value of `C_(P)` of `N_(2)` & `H_(2)O` will be (in Cal.`"deg."^(-1)" mol"^(-1)`)

A

8.3, 8.3

B

8.3, 11.3

C

113, 11.3

D

11.3, 8.3

Text Solution

Verified by Experts

The correct Answer is:
B
`C_(P)` is directly proportional to no. of atoms
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A mixture of hydrogen gas and theortical amount of air at 25^(@) C and a total pressure of 1atm , is exploded in a closed right vessel . If the process ossurs under adiabatic conditions then using the given data anwer the question that follow : Given : C_(p)(N_(2))and C_(p)(H_(2)O)"are" 8.3 and 11.3 caldeg^(-1)mol^(-1) not necessarily in the same order. DeltaH_(f)[H_(2)O(g)]=-57.8kcal ["take air as "80% N_(2),20%O_(2)"by volume".] If at a initial temperature T_(1),(e_(1)) is initial energy and higher final temperature , T_(2),E_(2) is the final internal energy , then which option is true?

Knowledge Check

  • An stoichiometric mixture of hydrogen gas and the air at 25^(@)C and a total pressure of 1 atm, is exploded in a closed rigid vessel. If the process occurs under adiabatic condition then using the given data answer the question that follow: Given : (i) C_(P)=8.3" Cal deg"^(-1)" mol"^(-1), (ii) C_(P)=11.3" Cal deg"^(-1)" mol"^(-1), DeltaH_(f) [H_(2)O(g)]= -57.8 kCal [Take air as 80% N_(2), 20 % O_(2) by volume] What will be final pressure in atm ?

    A
    `cong 8.5`
    B
    `cong 7.6`
    C
    `cong 5.46`
    D
    `cong 0.85`

  • An stoichiometric mixture of hydrogen gas and the air at 25^(@)C and a total pressure of 1 atm, is exploded in a closed rigid vessel. If the process occurs under adiabatic condition then using the given data answer the question that follow: Given : (i) C_(P)=8.3" Cal deg"^(-1)" mol"^(-1), (ii) C_(P)=11.3" Cal deg"^(-1)" mol"^(-1), DeltaH_(f) [H_(2)O(g)]= -57.8 kCal [Take air as 80% N_(2), 20 % O_(2) by volume] What will be the maximum temperature attained if the process occurs in adiabatic container ?

    A
    ` cong 2937 K`
    B
    `cong 2665 K`
    C
    `cong 1900 K`
    D
    `cong 298 K`

  • A mixture of hydrogen gas and theortical amount of air at 25^(@) C and a total pressure of 1atm , is exploded in a closed right vessel . If the process ossurs under adiabatic conditions then using the given data anwer the question that follow : Given : C_(p)(N_(2))and C_(p)(H_(2)O)"are" 8.3 and 11.3 caldeg^(-1)mol^(-1) not necessarily in the same order. DeltaH_(f)[H_(2)O(g)]=-57.8kcal ["take air as" 80% N_(2),20%O_(2)"by volume".] the value of C_(p)of N_(2)and H_(2)O inthe order N_(2),H_(2)O will be : (in cal deg^(-1)mol^(-1)

    A
    8.3,8.3
    B
    8.3,11.3
    C
    11.3,11.3
    D
    11.3,8.3

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