JEE Advanced levelOne or more correct optionsDifficulty 3 of 3sc108
For a gas reacting on a solid surface with rate r=1+KPkKP and K=0.50atm−1, the apparent order with respect to the gas is n=1/(1+KP). Select all correct statements.
AAt P=2.0atm the order is 1/3.
BAt P=0.020atm the order is about 0.99.
CAt P=18atm the order is 0.10.
DAt P=18atm the rate is 90% of the limiting rate k.
Answer: B, C, D
With KP=1 at 2 atm, n=1/2 (A false). At 0.020 atm n=1/1.01=0.990 (B true). At 18 atm KP=9, so n=1/10=0.10 (C true) and r/k=9/10=0.90 (D true).