Question

1. At one point during an analysis of the reaction shown below, compound W was used...

1. At one point during an analysis of the reaction shown below, compound W was used up at a rate of 0.4 molL-1S-1. At what rate was compound Y being formed 
2W+4X-> 3Y+2Z
a) 0.2 b) 0.3 c)0.4 d) 0.6 e) 0.8
2. what is the rate of the reaction described in question 1
a) 0.2 b) 0.3 c)0.4 d)0.6 e) 0.8

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Homework Answers

Answer #1

1) Ans= d

For example, aA +b B ------------> cC + dD

Rate of disappearance of reactants = Rate of appearance of products

(−1/a) Δ[A]/Δt = (−1/b) Δ[B]/Δt =  (+1/c) Δ[C]/Δt =  (+1/d) Δ[D]/Δt

Hence,

rate of disappearance of W = rate of formation of Y

(−1/2) Δ[W]/Δt =  (+1/3) Δ[Y]/Δt

(-1/2) (- 0.4 mol L-1 s-1) = (+1/3) Δ[Y]/Δt

Δ[Y]/Δt = 0.6 mol L-1 s-1

2) Ans= a

rate of reaction = (−1/2) Δ[W]/Δt = (-1/2) (- 0.4 mol L-1 s-1) = 0.2 mol L-1 s-1

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