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Look at the following diagram: The ...

Look at the following diagram:

The enthalpy change for the reaction `A rarr B` will be

A

`-25 kJ`

B

`-40 kJ`

C

`+25 kJ`

D

`-65 kJ`

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The correct Answer is:
A
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Knowledge Check

  • The enthalpy change of a reaction represents.

    A
    change in the concentration of the reactants
    B
    difference in the heat contents of the product and the reactants
    C
    difference in the number of moles of the reactants and products
    D
    all of these

  • The entalphy change for the reaction , H_2O_(s) rarr H_2O _((l)) is called enthalpy of

    A
    vapourization
    B
    fusion
    C
    combustion
    D
    transition

  • The enthalpy change for a reaction does not depend upon the

    A
    physical states of reactants and products
    B
    use of different reactants for the same product
    C
    nature of intermediate reaction steps
    D
    difference in initial or final temperatures of involved substances.

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