Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 30

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For one mole of a diatomic gas $γ$ is equal to

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Important Questions on Thermodynamics

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 31

The enthalpy of reaction is maximum in which of the following reaction?

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 32

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On the basis of Hess's law of constant heat summation, choose the correct relation:

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 33

In which of the following

ΔH = ΔU

?

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 34

Heat of combustion of

{CH}_{4}, C_{2} H_{4}

and

C_{2} H_{6}

are

- 890, - 1411

and

- 1560 kJ / mol

respectively. Which has the lowest calorific fuel value in

kJ / g

?

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 35

The heat of neutralisation of four acids

P, Q, R, S

are

- 13.7, - 9.4, - 11.2

and

- 12.4 kcal

, respectively when they are neutralised by a common base. The acidic character obeys the order

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 36

Heat of neutralisation of

NaOH

and

HCl

is

- 57.46 {kJeq}^{- 1}

. The heat of ionisation of water is in

kJ

is

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 37

Bond energy of

N - H, H - H

and

N \equiv N

are

a, b, c

respectively. The

ΔH

for the reaction

2 {NH}_{3} ⟶ N_{2} + 3 H_{2}

is

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Gamma Question Bank for Medical Chemistry>Chapter 6 - Thermodynamics>EXERCISE>Q 38

At $27 ° C$ , the combustion of ethane takes place according to the reaction
$C_{2} H_{6} (g) + \frac{7}{2} O_{2} (g) \to 2 {CO}_{2} (g) + 3 H_{2} O (ℓ)$

$ΔE - ΔH$ for this reaction at $27 ° C$ will be