For the reaction 2A( g )?B( g )+2C( g ), a reaction vessel initially contains on

Question

For the reaction 2A(g)?B(g)+2C(g), a reaction vessel initially contains only A at a pressure of PA=260 mmHg . At equilibrium, PA=40 mmHg .

Calculate the value of Kp. (Assume no changes in volume or temperature.)

Express your answer using two significant figures.

I already tried to solve this but it keeps saying I am incorrect:

R (rate): 2A(g) ? B(g) + 2C(g)

I (inital): 260 0 0

C (change) : -2x +x +2x

E (equilibrium): 40 110 220

Solved for x by using: 40= 260-2x, and I got x=110 as the answer.

I then plugged it back into the equation, (B(g)) x (Cl(g))^2 / A^2 = (110) x (220^2) / 40^2.

The final answer I got for Kp was 3,327.50, but it is incorrect.

Explanation / Answer

what ever you followed is exactly correct but answer might be given in atmosphere

so please convert mmHg in to atmosphere by using 1 atm = 760 mmHg

so base on this your answer might be

= 3,327.5 / 760

= 4.3782 atm might be your answer

or =4.4 atm

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.