Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2008
Exam
NEET
Year
2008
Subject
Chemistry
Chapter
Thermodynamics (C)

NEET 2008 · Chemistry · Thermodynamics (C)

For the gas phase reaction, PCl_5(~g) leftharpoons...

For the gas phase reaction, PCl5( g)⇌PCl3( g)+Cl2( g)\mathrm{PCl}_5(\mathrm{~g}) \rightleftharpoons \mathrm{PCl}_3(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) Which of the following conditions is correct?

Options

  1. AΔH>0\Delta \mathrm{H}>0 and ΔS<0\Delta \mathrm{S} < 0
  2. BΔH=0\Delta \mathrm{H}=0 and ΔS<0\Delta \mathrm{S} < 0
  3. CΔH>0\Delta \mathrm{H}>0 and ΔS>0\Delta \mathrm{S}>0
  4. DΔH<0\Delta \mathrm{H} < 0 and ΔS<0\Delta \mathrm{S} < 0

Correct answer

C. ΔH>0\Delta \mathrm{H}>0 and ΔS>0\Delta \mathrm{S}>0

Step-by-step solution

This is an endothermic reaction, So, ΔH>0\Delta \mathrm{H}>0 Since, number of mole in the product side is more So ΔS>0\Delta S>0.
Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

A certain organic solvent has Δ H\_vap = 28.50\ kJ mol^ -1 and Δ S\_vap = 88.2\ J K^ -1 \… MHT CET Medical 2026Which of the following statements regarding spontaneous process is NOT true? MHT CET Medical 2026Calculate Δ H for a reaction, 2X_ (g) + Y_ (g) arrow 2Z_ (g) at 298 K if Δ U = -10.5 kJ… MHT CET Medical 2026500\ mL of nitrogen gas and 750\ mL hydrogen gas were allowed to react at 1\ bar pressure… MHT CET Medical 2026The relationship between Δ H and Δ U for the reaction, PCl_3(g) + Cl_2(g) arrow PCl_5(g)… MHT CET Medical 2026What would be the heat released in kJ when 450\ cm^3 of 0.02\ M\ H_2SO_4 is mixed with… MHT CET Medical 2026Identify from following reactions that it takes place with Δ H = Δ U . MHT CET Medical 2026Calculate the work done in the following reaction at 300\ K , A(g) + B(g) = 2C(g) [R =… MHT CET Medical 2026 Full Thermodynamics (C) list All NEET PYQs