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Calculate DeltaE° for the reaction CaC2(...

Calculate `DeltaE°` for the reaction `CaC_2(S)+2H_2O(l) rarr Ca(OH)_2 (s)+C_2H_2(g)` if `DeltaH°_f( CaC_2)`=-62.0(KJ/mol) `DeltaH°_f(H_2O)`=-286.0KJ/mol `DeltaH°_f{Ca(OH)_2}` =-986.0(KJ/mol) `DeltaH°_f(C_2H_2)`=+225.0(KJ/mol)

A

+`122.52` KJ/mol

B

-`122.52` KJ/mol

C

`127.48` KJ/mol

D

-`127.48` KJ/mol

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AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
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  2. In a chemical equilibrium, K(c)=K(p) when

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  3. Calculate DeltaE° for the reaction CaC2(S)+2H2O(l) rarr Ca(OH)2 (s)+C2...

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  4. Which among the following is strongest acid?

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  5. Assuming ideal gas C(v,m) will be temperature independent for

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  6. Out of the following , the incorrect relation is

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  7. For the reaction, A(g) + B2(g) rarr AB2(g), delta S = 110 JK^(-1) mol^...

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  8. Which of the following salts does not hydrolyse?

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  9. Which of the following salts is not hydrolyse?

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  10. For the reaction, A(g) + B2(g) rarr AB2(g), delta S = 110 JK^(-1) mol^...

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  11. Out of the following , the incorrect relation is

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  12. Assuming ideal gas C(v,m) will be temperature independent for

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  13. Which of the following is strongest acid?

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  14. Calculate delta H° for the reaction , CaC2(s) + 2H2O(l) rarr Ca(OH)2(s...

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  15. In a chemical equilibrium, Kp = Kc is valid if

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  16. The resulting solution obtained by mixing 100ml, 0.1M H2SO4 and 50ml ,...

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  17. Which of the following is incorrect for isothermal reversible process

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  18. An equilibrium PCl5(g) dissociate 50% ,then the value of (P +Kp) is (w...

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  19. Give reasons for the least reactivity of nitrogen molecule.

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  20. Which of the following has highest heat of neutralization?

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