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20 June, 04:56

A sample of hydrogen exerts a pressure of 0.329 atm at 47 C. What will the pressure be at 77 C, assuming constant Volume?

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Answers (2)
  1. 20 June, 05:05
    0
    P

    2

    =

    0.360

    a

    t

    m

    Explanation:

    Assuming that Hydrogen is behaving ideally, therefore, we can use the ideal gas law:

    P

    V

    =

    n

    R

    T

    Since the gas is being heated only and the volume is not changing, therefore, n and V are constant and therefore we can say:

    P

    T

    =

    k

    where

    k

    =

    n

    R

    V

    is a constant value that does not change during the process.

    Thus,

    P

    1

    T

    1

    =

    P

    2

    T

    2

    This is called Gay-Lussac law.



    P

    2

    =

    P

    1

    T

    1

    *

    T

    2



    P

    2

    =

    0.329

    a

    t

    m

    320

    K

    *

    350

    K

    =

    0.360

    a

    t

    m
  2. 20 June, 06:09
    0
    P^2 = 0.360atm

    (ask for work if needed)
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