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The standard heats of formation for C Cl...

The standard heats of formation for `C Cl_(4(g)), H_2O_((g)), CO_(2(g)) "and" HCl_((g)) "are" -25.5, -57.8, -94.1"and" -22.1` kcal respectively. `DeltaH` for the reaction, `C Cl_(4(g))+2H_2O_((g)) to CO_(2(g)) + 4HCl_((g)) ` at 298 K is__________.

A

`-199.5`kcal

B

`-265.8`kcal

C

`-32.9`kcal

D

`-41.4`kcal

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The correct Answer is:
D
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The standard heats of formation at 298K for C Cl_(4)(g),H_(2)O(g),CO_(2)(g) and HCl(g) are -25.5,-57.8,-94.1 and -22.1 kcal mol^(-1) respectively. Calculate DeltaH_(298)^(@) for the reaction. C Cl_(4)(g)+2H_(2)O(g)toCO_(2)(g)+4HCl(g) .

At 298 K, the heats of formation fo C Cl_(4) (g), H_(2)O(g), CO_(2)(g) and HCl(g) are -25, -57, -94 and -22 K.cal mol^(-1) respectively. The DeltaH of the reaction: C Cl_(4)(g) +2H_(2)O rarr CO_(2) (g) +4HCl(g)

The standard heat of formation of at 298 K for CCl_(4)(g), H_(2)O(g), CO_(2)(g) and HCI(g) are -25.5, -57.8, -94.1 and -22.1 kcal mol^(-1) respectively. Calculate Delta_(r)H^(Theta) for the reaction r CCl_(4)(g)+2H_(2)O(g) rarr CO_(2)(g)+4HCl(g) Hint : Delta_(r)H^(Theta) = sum Delta_(f)H_("Products")^(Theta)- sum Delta_(f)H_("Reactants")^(Theta)

The standared enthalpies of formation at 298K for C C1(g), H_(2)O(g), CO_(2)(g) and HC1(g) are -106.7, -241.8, -393.7 , and -92.5kJ mol^(-1) , respectively. Calculate DeltaH^(Theta)underset(298K) for the reaction C C1_(4)(g) +2H_(2)O(g) rarr CO_(2)(g) +4HCI_(g)

Standard heat of formation of CH_(4)(g), CO_(2)(g) and H_(2)O(l) are -75, -393.5, -286 kJ respectively. Find out the change in enthalpy for the reaction. CH_(4)(g)+2O_(2)(g)rarr CO_(2)(g)+2H_(2)O(l)

TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -EVALUATION TEST
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  3. The heats of neutralisation of CH3 - COOH , H-COOH,HCN and H2 S are -1...

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  4. The bond dissociation energy of gaseous H(2), Cl(2) and HCl are 104, 5...

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  5. The difference between the heats of reaction at constant pressure and ...

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  6. Given standard enthalpy of formation of CO(-110 "KJ mol"^(-1)) and CO(...

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  7. H(2)(g)+1//2O(2)(g)=H(2)O(l) , Delta H(298 K)=-68.32 Kcal. Heat of vap...

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  8. The heat change at constant volume for the decomposition of silver (I)...

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  9. Which of the following value of DeltaH(f)^(@) represent that the produ...

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  10. The enthalpy change (DeltaH) for the process N2H(4(g)) to 2N((g)) + 4H...

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  11. For the two equations given below: H(2)(g)+1//2O(2)(g)toH(2)O(l)+x(1...

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  12. For an endothermic reaction, where Delta H represents the enthalpy of ...

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  13. The entropy chnge for a non-spontaneous reaction is 140 J/K.mole at 29...

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  14. The entropy change for a certain non-spontaneous reaction is 150 J/K.m...

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  15. C(2)H(4) +CI(2) rarr C(2)H(4)CI(2) DeltaH =- 270.6 kJ mol^(-1)K^(-1)...

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  16. Which of the following does NOT result in increase in the entropy?

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  17. The standard heats of formation for C Cl(4(g)), H2O((g)), CO(2(g)) "an...

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  18. For an isothermal free expansion of an ideal gas,

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  19. Work done on 3 moles of a perfect gas at 27^@C, if it is compressed re...

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  20. Isothermally and reversibly, one mole of argon expands from 2 m^3 to 2...

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