Q.

N2+3H2 → 2NH3 . Correct representation of rate of reaction is

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a

Rate  =  ΔN2Δt = 13ΔH2Δt = −12ΔNH3Δt

b

Rate  =  −ΔN2Δt = −3ΔH2Δt = −2ΔNH3Δt

c

Rate  =  −ΔN2Δt = −13ΔH2Δt = +12ΔNH3Δt

d

Rate  =  −ΔN2Δt = −13ΔH2Δt = −12ΔNH3Δt

answer is C.

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Detailed Solution

Concentration of reactant decreases with time.∴ denoted by negative sign.Coefficients of reactants and products must be written as reciprocals
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N2+3H2 → 2NH3 . Correct representation of rate of reaction is