Question

Nitrosyl bromide, NOBr, disassociates readily at room temperature. 2NOBr(g) <--> 2NO(g) + Br2(g). Some NOBr is placed in a flask at 25 degrees Celsius and allowed to disassociate. The total pressure at equilibrium is 190 mmHg and the compound is found to be 34% disassociated. What is the value of Kp?

Answer 1

you've got a balanced reaction, so you can set up a general equilibrium expression, Kp. You know that 34% of the NOBr has dissociated, so 66% must be left behind at equilibrium. You can use this info to plug in a set of values for the equilibrium concentrations, and solve for Kp

Answer 2

Thank you! :)

Answer 3

yw