Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Thermodynamics question

2018 · 15 Apr · Shift 1 · Q20
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Thermodynamics
  5. /2018 · 15 Apr · Shift 1 · Q20

Thermodynamics question

2018 · 15 Apr · Shift 1 · Q20

JEE MainChemistryThermodynamicsMCQ+4 / −1
For which of the following reactions, Δ\DeltaΔ H is equal to Δ\DeltaΔ U?
  1. A
    N2N_2N2​(g) + 3H2H_2H2​(g) →\to→ 2NH3NH_3NH3​(g)
  2. B
    2HIHIHI(g) →\to→ H2H_2H2​(g) + I2I_2I2​(g)
  3. C
    2NO2NO_2NO2​(g) →\to→ N2O4N_2O_4N2​O4​(g)
  4. D
    2SO2SO_2SO2​(g) + O2O_2O2​(g) →\to→ 2SO3SO_3SO3​(g)
PreviousNext

More from Thermodynamics

  • Δ fGo at 500 K for substance 'S' in liquid state and gaseous state are +100.7 kcl mol-1 and +103 kcal mol-1, respectively. Vapour pressure of liquid 'S' at 500 K is approximately equal to : ( R = 2 cal K-1 mol-1 )2018 · MCQ
  • Given (i) 2Fe2​O3​(s) → 4Fe(s) + 3O2​(g); Δ rGo = + 1487.0 kJ mol-1 (ii) 2CO(g) + O2​(g) → 2CO2​(g); Δ rGo = − 514.4 kJ mol-1 Free energy change, Δ rGo for the reaction 2Fe2​O3​(s) + 6CO(g) →…2018 · MCQ
  • At 320 K, a gas A2​ is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J mol-1 is approximately : (R = 8.314 JK-1 mol-1; ln2 = 0.693; ln 3 = 1.098)2018 · MCQ
  • For which of the following processes, Δ S is negative ?2018 · MCQ
  • Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermic reaction? Includes diagram2018 · MCQ
  • The combustion of benzene(l) gives CO2​(g) and H2​O(l). Given that heat of combustion of benzene at constant volume is –3263.9 kJ mol–1 at 25oC; heat of combustion (in kJ mol–1) of benzene at constant pressure will be : (R = 8.314 JK–1…2018 · MCQ
  • The enthalpy change on freezing of 1 mol of water at 5oC to ice at −5oC is : (Given Δ fusH = 6 kJ mol − 1 at 0oC, Cp(H2​O, ℓ = 75.3J mol − 1 K − 1) Cp(H2​O s) =36.8 J mol − 1 K − 1)2017 · MCQ
  • For a reaction, A(g) → A(ℓ); Δ H= − 3RT. The correct statement for the reaction is :2017 · MCQ