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The enthalpies of formation of Al(2)O(3)...

The enthalpies of formation of `Al_(2)O_(3)` and `Cr_(2)O_(3)` are `-1596KJ` and `-1134KJ` respectively. `DeltaH` for the reaction
`2Al+Cr_(2)O_(2)rarr2Cr+Al_(2)O_(3)` is

A

`-462kJ`

B

`-1365kJ`

C

`-2530kJ`

D

`+2530kJ`

Text Solution

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The correct Answer is:
A
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Delta H_(f)^(@) for Al_(2)O_(3) is -1670 KJ. Calculate the enthalpy change for the reaction 4Al+3O_(2)rarr 2Al_(2)O_(3)

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OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level-A
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  2. Which of the reaction defines molar DeltaH(f)^(@) ?

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  3. The enthalpies of formation of Al(2)O(3) and Cr(2)O(3) are -1596KJ and...

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