the reaction 2 NO + O2 <=> 2 NO2 (delta H = -114.2 kJ) has a Kc=7.00 x 10^7 at 200 degrees Celsius. what is the value of Kc at 400 degrees celsius?

a. 1.25x10^4
b. 1.68x10^8
c.3.91x10^11
d. 5.74x10^22
e. answer not given

1 answer

Use the van't Hoff equation.

Similar Questions

Why these answers are so?1- For this reaction 2H2 + O2 = 2H2O a- dela H=delta Hf b-delta Hc= delta Hf c- delta H= delta Hc d-
1. 0 answers
Given overall reaction: P4 + 10Cl2 ---> 4PCl5 Delta H for the reaction = ?PCl5 -----> PCl3 + Cl2 Delta H = +157 kJ P4 + 6Cl2
1. 2 answers
1) A reactions has a delta H of -76 Kj and a delta S of -117 J/K. Is the reaction spontaneous at 298 K?Work: Delta G= -76kJ/mol
1. 2 answers
For the reactionI2(s)+Cl2(g) ==> 2ICl(g) delta H= 36kJ, delta S= 158.8J/K at 25° C. Calculate the temperature at which Keq is
1. 1 answer