Chemical Engineering Thermodynamics - Study Mode

[#321] The main feature of Carnot refrigeration cycle is that, it
Correct Answer

(C) Accomplishes the reverse effect of the heat engine

Explanation

Solution: The Carnot refrigeration cycle is just reverse of heat engine cycle where it takes heat from low temperature reservoir and by the help of external work it give the heat to high temperature reservoir.

[#322] A refrigerator may be termed as a
Correct Answer

(A) Heat pump

Explanation

Solution: A refrigerator can also be termed as heat pump as both functions on a same way that is taking heat from low temperature reservoir and by the help of external work giving heat to high temperature reservoir.

[#323] In the decomposition of PCl 5 represented by, PCl 5 ⇋ PCl 3 + Cl 2 , decrease in the pressure of the system will __________ the degree of dissociation of PCl 5 .
Correct Answer

(A) Increase

Explanation

Solution: Since the moles of reactants is less than the products by Le Chatelier's principle we can say decreasing the pressure will increases the dissociation of $$PC{l_5}.$$

[#324] The four properties of a system viz. P, V, T, S are related by __________ equation.
Correct Answer

(C) Maxwell's

Explanation

Solution: The relation between the state properties is given by Maxwell’s equation which relates the state properties the relation between the given $$P,V,T,S$$ xa0 is $${left( {frac{{partial T}}{{partial V}}}
ight)_S} = {left( {frac{{partial P}}{{partial S}}}
ight)_V}.$$

[#325] Melting of ice exemplifies a/an
Correct Answer

(B) Endothermic reaction

Explanation

Solution: Since to melt the ice we provide heat (energy) the reaction is endothermic we can say enthalpy change is positive.