Consider the combustion of ethylene, c2h4(g)+3o2(g)→2co2(g)+2h2o(g). if the concentration of c2h4 is decreasing at the rate of 3.8×10−2 m/s , what is the rate of change in the concentration of co2? express your answer using two significant figures. δ[co2]/δt δ [ c o 2 ] / δ t = nothing m/s

0.076 M/s

Explanation:

The rate of a reaction aA + bB → cC + dD can be calculated by:

r = -(1/a)x(Δ[A]/Δt) = -(1/b)x(Δ[B]/Δt) = (1/c)x(Δ[C]/Δt) = (1/d)x(Δ[D]/Δt)

The minus signal for the reactants is because they're disappearing, so Δ{A] and Δ[B] will be negative. So, for the same time, r is proportional to the coefficients:

r = (1/2) Δ[CO₂]/Δt

Δ[CO₂]/Δt = 2x3.8x10⁻²

Δ[CO₂]/Δt = 0.076 M/s

the product of the pressure and volume is also constant

you need to stop taking that class