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Assertion (A): The dissolution of gases ...

Assertion (A): The dissolution of gases in water is always an endothermic process.
Reason (R ) : The dissolution of gases in water proceed with a negative value of `DeltaS`.

A

If both (A) and (R) are correct and (R) is the correct explanation for (A)

B

If both (A) and (R) are correct but (R) is not correct explanation for (A)

C

If (A) is correct but (R) is incorrect

D

If (A) is incorrect but (R) is correct

Text Solution

Verified by Experts

The correct Answer is:
D
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Formation of ice from water is an endothermic process.

The dissolution of ammonium chloride in water is an endothermic process but still it dissolves in water readily. Why ?

Knowledge Check

  • For the dissolution of an ionic solid in water

    A
    hydration energy should be more than lattice energy
    B
    lattice energy should be more than hydration energy
    C
    lattice energy should be equal to hydration energy
    D
    none of these

  • The solubility of inert gases in water is due to

    A
    Keesom attraction
    B
    Debye attraction
    C
    London force
    D
    Ion-dipole attraction

  • Assertion(A) : Heat of vaporisation is always endothermic. Reason(R ) : Water is exithermic compound.

    A
    Both `A`and `R` are true and `R` is the correct explantion of `A`
    B
    Both `A`and `R` are true and `R` is not a correct explantion of `A`
    C
    `A` is true but `R` is false
    D
    `A` is false but `R` is true

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    The dissolution of ammonium chloride in water is an endothermic process. What is the effect of temperature on its solubility?

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    This section contains Assertion (A) and Reason (R] type equations. Each question has 4 choices (1) and (2) (3) and (4) out of which only one is correct. Assertion : The dissolution of in water is exothermic still it dissolves in water. reason: ON dissolution of entropy increase DeltaS=+ve DeltaH is +ve DeltaG=-ve and the process is spontaneous.

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