Due: Start of Lesson 7 1. Consider the following reaction a. Express the rate of

Question

Due: Start of Lesson 7 1. Consider the following reaction a. Express the rate of reaction in terms of the change in concentration of each of Rate theferner-Goohe, At a-t b. Whe [Brjhs increasing at 0.25 molu/Ls, how fast is (Br 1 decreasing? 2. Reaction rate is expressed in terms of changes in concentration of reactants and products. Write a balanced equation for following rate expression. Assume all species are in t 3. Sulfur trioxide can undergo decomposition at a particular temperature accorfing to the equation For this reaction, The reaction rate is 1.75 x 107 mol L-1 min', when the concentration of sulfur trioxide s 5.4 x 10 mol Ll Calculate the value of the rate constant &t; this temperature. rate- [SO12 krate 1.7SX10-7n101 / L. m in S02

Explanation / Answer

first part is correct

second part

according to your reaction

5 Br- produces 3 Br2

so if the Br2 is increasing by 0.25 then

delta (Br-) / 5 = delta (br2)/3

x / 5 = 0.25 / 3

x = 0.25 * 5 / 3 =- 0.4166, the negative sign is because the concentration is decreasing

(you forgot to divide by 3)

second question is correct

third question

rate = k * (so4)2

k = rate / so42

rate constant value is correct

*hope this helps, please post the other questions on a different post=)

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