allery∆vapH of water at 298 K is 44.01 kJ/mol. Heat needed to evaporate 36 g of water?
A22.01 kJ
B176.0 kJ
C44.01 kJ
D88.02 kJ
Answer & Solution
Correct answer: D. 88.02 kJ
36 g of water is 2 mol, so the heat needed is 2 x 44.01 = 88.02 kJ.
Keep practising Thermodynamics
Browse all Thermodynamics questions for NEET UG, or explore more Chemistry topics.
Related questions
Molecules spinning like a top show which kind of motion?For a gas reaction with ∆ng = +1 at 300 K, ∆H - ∆U is about:Heat from an exothermic reaction favours spontaneity because it:Ionization energy and electron affinity, unlike the matching enthalpies, are defined at:In thermodynamics, energy exchanged because of a temperature difference is called:Two moles of ideal gas expand reversibly at 300 K to ten times their volume. Work done w?Kp for 3/2 O2(g) → O3(g) at 298 K is 2.47 x 10^-29. ∆rG° for this change is about:A reaction has K = 10 at 300 K. Using R = 8.314 J/K mol, ∆rG° is about: