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Q1. Write 1 Faraday in terms of coulombs.

(a) 96500 C
(b) 95600 C
(c) 9560 C
(d) 9650 C

Q2. What is the relation between Gibbs free energy and the EMF of the cell?

(a) ?G = -nFEcell
(b) G = -nFEcell
(c) ?G = -nEcell
(d) ?G = -nFcell

Q3. In the equation, ?G = ? 2.303 RT logK, what is K?

(a) change in temperature
(b) kelvin
(c) equilibrium constant
(d) change in enthalpy

Q4. Calculate the Gibbs free energy for the conversion of oxygen to Ozone at room temperature if KP is given as 2.47 x 10-29.

(a) 163 kJ/mol
(b) 163 J/mol
(c) 163 kJ
(d) 163 k/mol

Q5. The Gibbs free energy is positive when a change in enthalpy and change in entropy are positive at ____________

(a) high temperatures
(b) low temperature
(c) all temperatures
(d) only at 0 Kelvin

Q6. Which of the following is not a type of exergonic reaction?

(a) formation of table salt from Sodium and chlorine
(b) combustion reaction
(c) chemiluminescence
(d) photosynthesis

Q7. The melting of ice into liquid water is an example of tube _______________ reaction.

(a) endergonic
(b) exergonic
(c) exothermic
(d) endothermic

Q8. In a reaction, the change in entropy is given as 2.4 cal/K and the change in Gibbs free energy is given as 3.4 kcal, calculate the change in heat at the temperature of 20-degree centigrade?

(a) 3.4 kcal
(b) 3.4 cal
(c) 3.4 kJ
(d) 3.4 J

Q9. Calculate the Gibbs free energy for the reaction of conversion of ATP into ADP at 293 Kelvin the change in enthalpy is 19.07 Kcal and the change in entropy is 90 cal per Kelvin.

(a) 7.3 cal
(b) -5.3 Kcal
(c) 7.3 Kcal
(d) -7.3 Kcal

Q10. Find out whether the following reaction is spontaneous or not at 127 degrees centigrade? N2(g) + 3H2(g) ? 2NH3(g); ?H = 92.22 kJ/mol and ?S = -198.75 J/K-mol.

(a) it is spontaneous
(b) it is not spontaneous
(c) it may be spontaneous
(d) cannot predict


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The Relation Between H And U Is

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The Relation Between H And U Is

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A Well Stoppered Thermos Flask Contains Some Ice Cubes. This Is An Example Of A

Modified 243 Year Ago Bhavna

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A Well Stoppered Thermos Flask Contains Some Ice Cubes. This Is An Example Of A

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Three Moles Of An Ideal Gas Expanded Spontaneously Into Vacuum. The Work Done Will Be

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Three Moles Of An Ideal Gas Expanded Spontaneously Into Vacuum. The Work Done Will Be

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In Order To Decompose 9 G Water 142.5 KJ Heat Is Required. Hence, The Enthalpy Of Formation Of Water Is

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In Order To Decompose 9 G Water 142.5 KJ Heat Is Required. Hence, The Enthalpy Of Formation Of Water Is

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Changes In A System From An Initial State To The Final State Were Made By A Different Manner That ΔH Remains Same But Q Changes Because

Modified 243 Year Ago

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Changes In A System From An Initial State To The Final State Were Made By A Different Manner That ΔH Remains Same But Q Changes Because

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If W Is The Amount Of Work Done By The System And Q Is The Amount Of Heat Supplied To The System. Identify The Type Of The System

Modified 243 Year Ago

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