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If, H(2)(g)+Cl(2)(g)rarr 2HCl(g) , Delta...

If, `H_(2)(g)+Cl_(2)(g)rarr 2HCl(g) , Delta H^(@)=-44` Kcal
`2Na(s)+2HCl(g)rarr 2NaCl(s)+H_(2)(g), Delta H=-152` Kcal Then, `Na(s)+0.5Cl_(2)(g)rarr NaCl(s) , Delta H^(@) = ?`

A

108 Kcal

B

196 Kcal

C

`-98` Kcal

D

54 Kcal

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Verified by Experts

The correct Answer is:
C
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H_(2)(g) + Cl_(2) rarr 2HCl (g), Delta H = -44K.cals 2 Na(s)+2HCl (g)rarr 2NaCl(s)+H_(2)(g), Delta H = -152K.cal Na(s)+(1)/(2)Cl_(2)(g) rarr NaCl(s), Delta H = ?

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NH_(3)(g) + 3Cl_(2)(g) rarr NCl_(3)(g) + 3HCl(g), " "DeltaH_(1) N_(2)(g) + 3H_(2)(g) rarr 2NH_(3)(g), " "Delta H_(2) H_(2)(g) + Cl_(2)(g) rarr 2HCl(g), " "Delta H_(3) The heat of formation of NCl3(g) in the terms of DeltaH_(1), DeltaH_2 and DeltaH_(3) is :

Given the following equations and values, determine the enthalpy of reaction at 298 K for reaction: C_(2)H_(4)(g) + 6F_(2)(g) rarr 2CF_(4)(g) + 4HF(g) H_(2)(g) + F_(2)(g) rarr 2HF(g) " "Delta H_(1)^(@) = -537 kJ C(s) + 2F_(2)(g) rarr CF_(4)(g) " "DeltaH_(2)^(@) = -680 kJ 2C(s) + 2H_(2)(g) rarr C_(2)H_(4)(g) " "Delta H_(3)^(@) =52 kJ

Consider the following reactions: I. C(s) + 1/2 O_(2)(g) rarr CO(g)," "Delta H_(1) = x_(1) II. CO(g) + 1/2 O_(2)(g) rarr CO_(2)(g), " "Delta H_(2) = x_(2) III. C(s) + CO_(2)(g) rarr 2CO(g)," "Delta H_(3) = x_(3) Select the correct statements:

Find the heat of reaction 2Na(s) +1//2O_(2)(g) rarr Na_(2)O(s) Given: Na_(2)O(s) +H_(2)Orarr 2NaOH, DeltaH =- 56 kcal 2Na + 2H_(2)O rarr 2NaOh +H_(2),DeltaH =- 88 kcal H_(2) +1//2O_(2)rarr H_(2)O, DeltaH =- 68 kcal

ALLEN-THERMODYNAMICS -EXERCISE -3
  1. Given that , A(s) rarr A(l)DeltaH=x A(l) rarr A(g), DeltaH=y The...

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  2. The enthalpy change of a reaction does not depend on

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  3. From the thermochemical reactions, C(graphite)+1//2O(2)rarr CO , Delta...

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  4. If H(2)+1//2O(2)rarr H(2)O , Delta =-68.39 Kcal K+H(2)O+ "water" rar...

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  5. Given C(s)+O(2)(g)rarr CO(2)(g)+94.2 Kcal H(2)(g)+2O(2)(g)rarr CO(2)...

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  6. From the following data, the heat of formation of Ca(OH)(2)(s) at 18^(...

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  7. If, H(2)(g)+Cl(2)(g)rarr 2HCl(g) , Delta H^(@)=-44 Kcal 2Na(s)+2HCl...

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  8. Given : S((s))+(3)/(2)O(2(g))rarrSO(3(g)+2X Kcal SO(2(s))+(1)/(2)O(2...

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  9. If S +O(2) rarr SO(2), DeltaH =- 298.2 kJ SO(2)+1//2O(2) rarr SO(3),...

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  10. Givecn that : Zn+1//2O(2)rarr ZnO+84000 cal ……………1 Hg+1//2O(2)rarr...

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  11. Given that - 2C(s)+2O(2)(g)rarr 2CO(2)(g) Delta H = -787 KJ H(2)(g...

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  12. Find the heat change in the reaction : NH(3)(g)+HCl(g)rarr NH(4)Cl(s) ...

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  13. The heat of reaction of A+(1)/(2)O(2)rarr AO is -50 K call and AO+...

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  14. C(s)+O(2)(g)rarr CO(2)(g)+94.0 K cal. CO(g)+(1)/(2)O(2)(g)rarr CO(2)...

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  15. Using the following thermochemical data. C(S)+O(2)(g)rarr CO(2)(g), ...

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  16. The enthalpy of vapourisation of liquid water using the data : H(2)(...

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  17. 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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  18. The heat of solution of anhydrous CuSO(4) and CuSO(4).5H(2)O are -15.8...

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  19. One moles of anhydrous AB dissolves in water and liberates 21.0 J mol^...

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  20. Which of the following expression is true :-

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