Answer to Question #189230 in General Chemistry for Yaseen Elmehrek

Question

Question 4:

E + 2 F --> 2 G + 4 D 

The rate law for the above reaction is 

O third order 

O second order 

O first order 

O k[G]2[D]4

O impossible to find without experimental data

Question 5:

A first order reaction is found that 20% of the sample A has decomposed in 100 seconds. 

(i) Find the value for the rate constant (include units) 

(ii) What is the half-life of this reaction (include units) 

If the reaction is 2nd order and has an initial concentration of 0.200 M 

(iii) Find the value of the rate constant (include units)

(iv) What is the half-life of this reaction (include units)

Question 6:

1) HBr + Oz <=> HOOBr 

2) HOOBr+ HBr > 2 HOBR 

3) HOBR + HBr <=> H;O + Brz 

4) HOBR + HBr<> H;O + Br2 

(i) If the first step is the slow step, what is the rate law for the reaction? 

(ii) If the slow step is the second step, what is the rate law for the reaction?

Answer 1

4.Second order

5.i) $6.93×10 ^{-3}molmin^{-1}$

ii) 5 half life's

i) $4.93×10 ^{-4}s^{-1}$

ii) 2.3

6.i)Is an equation that links the initial or forward reaction rate with the concentrations or pressures of the reactants and constant parameters.

ii)