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When 0.5 g of sulphur is burnt to SO(2):...

When 0.5 g of sulphur is burnt to `SO_(2):4.6 kJ` of heat is liberated. What is the enthalpy of formation of sulphur dioxide ?

A

`-147.2 kJ`

B

`+147.2 kJ`

C

`+294.4 kJ`

D

`-294.4 kJ`

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • When 0 cdot 5 g of sulphur is burnt to from SO_2(g), 4 cdot k of heat is liberated. The enthalpy of formation of SO_2(g) is:

    A
    `-147 cdot 2` k J
    B
    `+ 147 cdot 2` k J
    C
    `+294 cdot 4` k J
    D
    `-294 cdot 4` k J

  • In order to decompose 9g water 142.5 kJ heat is required. Hence the enthalpy of formation of water is

    A
    `-285kJ`
    B
    `+285kJ`
    C
    `-142.5kJ`
    D
    `+142.5kJ`

  • The Delta H^(theta) for the reaction 4S(s) + 6O_(2)(g) rarr 4 SO_(3)(g) is -1583.2kJ . Standard enthalpy of formation of sulphur trioxide is:

    A
    `-3166.4kJ`
    B
    `3166.4kJ`
    C
    `-395.8kJ`
    D
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