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1) If the half-life of a reaction increases as the initial concentration of subs

ID: 587154 • Letter: 1

Question

1) If the half-life of a reaction increases as the initial concentration of substance increases, the order of the reaction is _____

2.5

2

1

3

0

2)  

Based on the equilibrium constant for the reaction below:

SO3(g) 2SO2(g) + O2(g)      K = 1.8 × 10-5

What is the equilibrium constant for the reaction:

SO2(g) + ½O2 (g) SO3(g) K = ?

56000

240

0.0021

28000

0.0042

2.5

2

1

3

0

2)  

Based on the equilibrium constant for the reaction below:

SO3(g) 2SO2(g) + O2(g)      K = 1.8 × 10-5

What is the equilibrium constant for the reaction:

SO2(g) + ½O2 (g) SO3(g) K = ?

56000

240

0.0021

28000

0.0042

Explanation / Answer

Ans 1 : 0

The half life is the time taken by a substance to get reduced to half of its initial value.

The t1/2 for 0 order reaction is given as :

t 1/2 = [Ao] / 2k

where [Ao] is the initial concentration

and K is the rate constant