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JEE 2020 Chemistry Revision Quiz :Thermodynamics

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Question 1

A solution containing 62 g ethylene glycol in 250 g water is cooled to -100C. If Kf for water is 1.86 K kg mol-1, the amount of water (in g) separated as ice is

Question 2

Given that the standard entropy of gaseous water is 189 JK-1mol-1 and the standard entropy of liquid water is 69.9 JK-1mol-1, calculate the standard entropy change when 1 mole of gaseous water condenses to the liquid state,
H2O(g) H2O(l)

Question 3

Out of 100atm gas and 1 atm gas, which has higher positional entropy?

Question 4

Calculate the change in entropy when 200g of H2O at 100°C is mixed with 300g of H2O at 20°C in an insulated vessel. Cp,m =75.5 KJ/mol

Question 5

The degree of disorder of a mixture of two gases:

Question 6

The standard enthalpy of decomposition of the yellow complex H3NSO2 into ammonia gas and sulphur dioxide is + 40 kJ/mol Calculate the standard enthalpy of formation of H3NSO2 ∆Hƒ°(NH3) = – 46.11 kJ/mol ∆Hƒ°(SO2) = – 296.83 kJ/mol

Question 7

The standard enthalpy of combustion of propane gas is – 2220 kJ/mol and the standard enthalpy of vaporisation of propane liquid is + 15 kJ/mol. Calculate the standard enthalpy and standard internal energy of combustion of liquid propane…

Question 8

Which combination of vapour pressure , intermolecular forces and ∆Hvaporisation is matched correctly?
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Dec 4JEE & BITSAT