gmat prep
This topic has expert replies
- jayhawk2001
- Community Manager
- Posts: 789
- Joined: Sun Jan 28, 2007 3:51 pm
- Location: Silicon valley, California
- Thanked: 30 times
- Followed by:1 members
R = rate, Ca = conc of chemical A, Cb = conc of chemical B
Let K be a constant.
We have, R = K * Ca^2 / Cb
If Cb becomes 2*Cb, we are asked to find out how Ca should change to
keep R the same. We know K is a constant.
K * Ca^2 / Cb = K* x *Ca^2 / 2*Cb
Solving for x, we get sqrt(2) i.e. 1.414
So, Ca should be increased by 41.4%
Hence D
Let K be a constant.
We have, R = K * Ca^2 / Cb
If Cb becomes 2*Cb, we are asked to find out how Ca should change to
keep R the same. We know K is a constant.
K * Ca^2 / Cb = K* x *Ca^2 / 2*Cb
Solving for x, we get sqrt(2) i.e. 1.414
So, Ca should be increased by 41.4%
Hence D