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shoot4greatness
- Master | Next Rank: 500 Posts
- Posts: 100
- Joined: Sat Sep 11, 2010 6:57 pm
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Hi ya'll,
Ran into a very insightful article on btgm.
The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
(a) 100% decrease
(b) 50% decrease
(c) 40% decrease
(d) 40% increase
(e) 50% increase
After reading though the article, I did a 'plug in the number.' Can anyone check it out please?
Chem rate is proportional to A and inversely proportional to B
If r=100 A=100 B=100
B increase of 100% = 200, then r=50 and A=25
let x be a multiplier
50(x)^2 = 100
x^2 = 2
sq. root (2) = 1.4
40% increase necessary
Ran into a very insightful article on btgm.
The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
(a) 100% decrease
(b) 50% decrease
(c) 40% decrease
(d) 40% increase
(e) 50% increase
After reading though the article, I did a 'plug in the number.' Can anyone check it out please?
Chem rate is proportional to A and inversely proportional to B
If r=100 A=100 B=100
B increase of 100% = 200, then r=50 and A=25
let x be a multiplier
50(x)^2 = 100
x^2 = 2
sq. root (2) = 1.4
40% increase necessary
