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Assertion: Compressibility factor for hy...

Assertion: Compressibility factor for hydrogen varies with pressure with positive slope at all pressures.
Reason: Even at low pressures, repulsive forces dominate hydrogen gas.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
In case of `H_(2)`, compressibility factor increases with the pressure. At `273K, Z gt1` which shows that it is difficult to compress the gas as compared to ideal gas. In this case repulsive forces dominate.
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STATEMENT-1 : Compressibility factor for hydrogen varies with pressure with positive slope at all pressures at 0^(@)C . STATEMENT-2 : Even at low pressures, repulsive forces dominate in hydrogen gas at 0^(@)C .

The compressibility factor for a real gas at high pressure is .

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Knowledge Check

  • Assertion : Compressiblity factor for hydrogen varies with pressure with positive slope at all pressures. Reason : Even at low pressure, repulsive forces dominate hydrogen gas.

    A
    If both assertion and reason are true and the reason is correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If the assertion and reason both are false

  • STATEMENT-1 : Compressibility factor for hydrogen varies with pressure with positive slope at all pressures at 0^(@)C . STATEMENT-2 : Even at low pressures, repulsive forces dominate in hydrogen gas at 0^(@)C .

    A
    If both the statement are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-1
    B
    If both the statement are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-1
    C
    If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE
    D
    If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

  • At moderate pressure, compressibility factor of a gas

    A
    increases with increase in temperature
    B
    decreases with increase in temperature
    C
    remains constant with change in temperature
    D
    is greater than one.
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