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The balanced equation for the reaction of sodium sulfide with hydrogen bromide is as follows. 2 HBr(aq) + Na2S(aq) → H2S(g) + 2 NaBr(aq)What is the value of Δ[H2S]/Δt if Δ[HBr]/Δt = 2.8×10—3 M/s during the same time period?

The balanced equation for the reaction of sodium sulfide with hydrogen bromide is as follows.
2 HBr(aq) + Na₂S(aq) → H₂S(g) + 2 NaBr(aq)What is the value of Δ[H₂S]/Δt if Δ[HBr]/Δt = 2.8×10^—3 M/s during the same time period?