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The standard heat of formation of sodium...

The standard heat of formation of sodium ions in aqueous solution from the following data :
Heat of formation of `NaOH(aq)` at `25^(@)C = - 470.7 KJ` :
Heat of formation of `OH^(-1)` at `25^(@)C = -228.8 KJ` is :

A

`-251.9KJ`

B

`241.9KJ `

C

`-241.9KJ`

D

`300KJmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-OBJECTIVE EXERCISE - 2 (HESS LAW)
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  7. Given C+ 2S rarr CS(2), DeltaHf^(0) = +117.0 KJ mol^(-1), C + O(2) rar...

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  8. The standard heat of formation of sodium ions in aqueous solution from...

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  9. The lattice energy of solid NaCl is 180K. Call per mol. The dissolutio...

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  12. For the reaction: 2H(2(g)) + O(2(g)) rarr 2H2O((g)) , DeltaH = -571 ...

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  14. The enthalpy changes for the following processes are listed below:  ...

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  17. What is theheat of formation of C(6)H(6), given that the heats of comb...

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  18. The heats of combustion of carbon hydrogen and acetylene are -394kJ, -...

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  19. The enthalpies of combustion of carbon and carbon monoxide are -390 KJ...

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