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Grade 6Physical Chemistry

At a given temperature 0.80mole of Nitrogen gas and 0.90moles of hydrogen gas we`re introduced in an evacuated 1litre container,after equillibrium was established the equillibrium concentration were determined to be 0.20moles of aAmmonia gas,0.70moles of Nitrogen gas and 0.60moles of hydrogen gas. Calculate equillibrium constant for the reaction

Dynes Laurean

9 Years agoGrade 6

1 Answer

pallavi anand kulkarni

Approved Tutor Answer9 Years ago

N2 + 3H2 -----> 2NH3

Equilibrium concentrations of N2, H2 and NH3 are given as 0.70, 0.60 and 0.20 moles respectively.

Hence equilibrium constant i.e. Kc can be calculated as follows:

Kc = [NH3]^2/([N2] [H2]^3

= (0.20)^2/(0.70)(0.60)^3

= 0.2645

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