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
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