Chemistry - Chemical Equilibrium Question with Solution | TestHub

ChemistryChemical EquilibriumMiscellaneous/MixedEasy2 minPYQ_2020
ChemistryEasysingle choice

Hydrogen peroxide (H2O2) decomposes according to the equation

2 H 2 O 2 2 H 2 O I + O 2 g

From the following data at 2 5 C calculate the value of Kpat 400 K for the above reaction, Δ H = - 1 9 6 · 0  KJ    Δ S = 1 2 5 · 6 5 J/K .
[Given: 10 0.15 =1.41 ]

Options:

Answer:
A
Solution:

Δ G = + Δ H - T Δ S

= - 1 9 6 0 0 0 - 4 0 0 1 2 5 · 6 5

= - 1 9 6 0 0 0 - 5 0 2 6 0

= - 2 4 6 2 6 0 J = - 2 · 3 0 3 × 8 · 3 1 4 × 4 0 0  log  K

log  K p = - 2 4 6 2 6 0 - 7 6 5 8 = 3 2 · 1 5

K p = Antilog 3 2 · 1 5

= 0.14 × 1 0 3 2

Stream:NTA_ABHYASSubject:ChemistryTopic:Chemical EquilibriumSubtopic:Miscellaneous/Mixed
2mℹ️ Source: PYQ_2020

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