MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryChemical EquilibriumEquilibrium Constant & Concentrations
0.6 mole of NH3 in a reaction vessel of 2dm3 capacity was brought to equilibrium. The vessel was then found to contain 0.15 mole of H2 formed by the reaction 2NH3(g) N2(g) + 3H2(g) Which of the following statements is true
A.0.15 mole of the original NH3 had dissociated at
B.0.55 mole of ammonia is left in the vessel
C.At equilibrium the vessel contained 0.45 mole of N2
D.The concentration of NH3 at equilibrium is 0.25✓ Correct
Explanation
let initial ammonia conc. =C 3 2 2 3 2NH N 3H Initial 0.6 0 0 Equilibrium 0.6 2x x 3x But 3x=0.15 NH = 0.6 2x =0.6 2 0.05 0.5 moles x CHEMICAL EQUILIBRIUM 39 Unreacted ammonia per 3 dm 3 0.5 = 0.25 mol/dm 2
Practice More Like This
Take chapter-wise tests, track your progress, and master Chemical Equilibrium.
Start Free Practice →