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|Delta(f)H|" of "(H(2)O,l)gt|Delta(f)H|"...

`|Delta_(f)H|" of "(H_(2)O,l)gt|Delta_(f)H|" of "(H_(2)O,g)`
`DeltaH_("condensation")` is negative.

A

If both the statements are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-13

B

If both the statements are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-13

C

If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE

D

If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

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The correct Answer is:
A
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Enthalpy of neutralzation is defined as the enthalpy change when 1 mole of acid /base is completely neutralized by base // acid in dilute solution . For Strong acid and strong base neutralization net chemical change is H^(+) (aq)+OH^(-)(aq)to H_(2)O(l) Delta_(r)H^(@)=-55.84KJ//mol DeltaH_("ionization")^(@) of aqueous solution of strong acid and strong base is zero . when a dilute solution of weak acid or base is neutralized, the enthalpy of neutralization is somewhat less because of the absorption of heat in the ionzation of the because of the absorotion of heat in the ionization of the weak acid or base ,for weak acid /base DeltaH_("neutrlzation")^(@)=DeltaH_("ionization")^(@)+ Delta _(r)H^(@)(H^(+)+OH^(-)to H_(2)O) What is DeltaH^(@) for complate neutralization of strong diacidic base A(OH)_(2)by HNO_(3) ?

Enthalpy of neutralzation is defined as the enthalpy change when 1 mole of acid / / base is completely neutralized by base // acid in dilute solution . For Strong acid and strong base neutralization net chemical change is H^(+) (aq)+OH^(-)(aq)to H_(2)O(l) Delta_(r)H^(@)=-55.84KJ//mol DeltaH_("ionization")^(@) of aqueous solution of strong acid and strong base is zero . when a dilute solution of weak acid or base is neutralized, the enthalpy of neutralization is somewhat less because of the absorption of heat in the ionzation of the because of the absorotion of heat in the ionization of the weak acid or base ,for weak acid /base DeltaH_("neutrlzation")^(@)=DeltaH_("ionization")^(@)+ Delta _(r)H^(@)(H^(+)+OH^(-)to H_(2)O) If enthalpy of neutralization of CH_(3)COOH by NaOH is -49.86KJ // mol then enthalpy of ionization of CH_(3)COOH is:

If Delta_(f)H^(@)(C_(2)H_(4)) and Delta_(f)H^(@)(C_(2)H_(6)) are x_(1) and x_(2) kcal mol^(-1) , then heat of hydrogenation of C_(2)H_(4) is :

From the following date , mark the opation(s) where Delta H is correctly written for the given reaction . Given: H+(aq) +OH-(aq) to H_(2)O(l), DeltaH=-57.3 kJ DeltaH_(solution) HA(g)=-70.7 kJ"mole" DeltaH_(solution) BOH(g)=- 20 kJ"mole" DeltaH_("ionzatoin") of HA=15 kJ//"mole" and BOH is a strong base.

Calculate the standard enthaply of formation of CH_(3) OH(l) from the following data CH_(3) OH (l) + (3)/(2) O_(2) (g) to CO_(2) (g) + 2H_(2)O (l) , Delta_(r) H^(@) = - 726 kj/mol C(g) + O_(2) (g) to CO_(2) (g), Delta_(c) H^(@) = - 393 kj/mol H_(2)(g) + (1)/(2) O_(2) (g) to H_(2) O(l) : Delta_(f) H^(@) = - 286 kj /mol

Consider the following reaction: H_(2)O(l)toH_(2)O(g)" "DeltaH_(1)=44kJ 2CH_(3)OH(l)+3O_(2)to4H_(2)O(l)+2CO_(2)(g)" "DeltaH_(2)=-1453kJ What is the value of DeltaH for second reaction if water vapour instead of liquid water is formed as product?

At 25^(@)C , DeltaG^(@) for the process H_(2)O(l)iffH_(2)O(g) is 8.6 kJ. The vapour pressure of water at this temerapture, is nearly :

Use the given standard enthalpies of formation (in kJ/mol) to determine the enthalpy of reaction of the following reaction : NH_(3)(g)+3F_(2)(g)rarrNF_(3)+3HF(g) Delta H_(f)^(@)(NH_(3)) (g)=-46.2 , Delta H_(f)^(@)(NF_(3))(g)=-113.0 DeltaH_(f)^(@)(HF) (g)=-269.0

K_(p) has the value of 10^(-6) atm^(3) and 10^(-4)atm^(3) at 298 K and 323 K respectiely for the reaction CuSO_(4).3H_(2)O(s)hArrCuSO_(4)(s)+3H_(2)O(g) Delta_(r)H^(@) for the reaction is :

Delta G = Delta H - T Delta S was given by

NARENDRA AWASTHI-THERMODYNAMICS-Exercise
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  2. The incorrect iupac name of the compound is 3,3-diethylbutane. write i...

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  3. |Delta(f)H|" of "(H(2)O,l)gt|Delta(f)H|" of "(H(2)O,g) DeltaH("con...

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  4. All combustion reactions are exothermic. Enthalpies of products are ...

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  5. Enthalpy of neutralization is defined as the enthalpy change when 1 mo...

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  6. Assertion:-Internal energy of a real gas may change during expansion a...

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  7. What is the power of a machine which does 2000 joules of work in 10 se...

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  8. The expansion of a gas into an evacuated space takes place non-spontan...

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  9. Write the structural formulae for : 4-methylpent-2-ene

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  10. 2 mole of an ideal gas at 27^(@)C expands isothermally and reversibly ...

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  11. A diatomic ideal gas is expanded according to PV^(3) = constant, under...

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  12. A heat engine operating between 227^(@)C and 77^(@)C absorbs 10 kcal o...

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  13. Write the structural formulae for : 2-methylpropan-2-ol

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  14. Molar heat capacities at constant pressure for A, B and C are 3, 1.5 a...

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  15. Standard molar enthalpy of combustion of glucose is -2880 kJ. If only ...

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  16. If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H^(@)(C(2)H(6)) are x(1) and x...

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  17. The integral enthalpies of solution of anhydrous CuSO(4) (s) and hydra...

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  18. If enthalpy of neutralisation of HCl by NaOH is -57 kJ " mol"^(-1) and...

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  19. If enthalpy of neutralisation of HCl by NaOH is -57 kJ " mol"^(-1) and...

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  20. x g sample of NH(4)NO(3) is decomposed in a Bomb calorimeter. The temp...

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