The reaction 2A →B is second order in A with a rate constant of 35.1 M−1...

The reaction

2A →B

is second order in A with a rate constant of 35.1 M⁻¹ · s⁻¹ at 25°C.

(a) Starting with [A]₀ = 0.00781 M, how long will it take for the concentration of A to drop to 0.00180 M?

s

(b) Calculate the half-life of the reaction for [A]₀ = 0.00781 M.

s

(c) Calculate the half-life of the reaction for [A]₀ = 0.00269 M.
s

2. Given the same reactant concentrations, the reaction CO(g) + Cl₂(g) →COCl₂(g) at 229°C is 32.8 times as fast as the same reaction at 161°

C. Calculate the activation energy for this reaction. Assume that the frequency factor is constant.
kJ/mol

The reaction H₂(g) + I₂(g) → 2HI(g) proceeds via a two-step mechanism in which the rate law for the rate-determining step israte = k[H₂][I]².

Write the mechanism for the reaction.

Click in the answer box to activate the palette. Include states of matter.

Step 1:
Step 2:
Rewrite the rate law using only reactant concentrations. Use square brackets notation.

Click in the answer box to activate the palette.

rate =

Expert Solution

b

queen_honey_blossom answered 2 years ago

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