Posted by **Kim** on Monday, March 2, 2009 at 11:52pm.

How do you solve this:

Consider the decomposition of ammonium chloride at a cerain temperature

NH4Cl(s) <- NH3(g) + HCl(g)

->

Calculate the equilibrium constant Kp if the total pressure is 2.2 atm at that temperature.

- Chemistry -
**DrBob222**, Tuesday, March 3, 2009 at 12:01am
I think I would do the following:

NH4Cl(s) ==> NH3(g) + HCl(g)

Ptotal = PNH3 + PHCl

2.2 atm = PNH3 + PHCl

From the equation, PNH3 = PHCl; therefore,

2.2 = 2PNH3 and you can go from there.

Then substitute partial pressures into

Kp = PNH3*PHCl to find Kp.

- Chemistry -
**Kim**, Tuesday, March 3, 2009 at 12:29am
thank you. so what did you get as a final answer for this problem then? and what did u do after doing 2.2=2PHN3

and after subsituting the partial pressure??

Thanks

- Chemistry -
**DrBob222**, Tuesday, March 3, 2009 at 12:38am
The remainder of the problem is up to you. We try to HELP you do the work but we don't do it. You can substitute and calculate Kp; it's just multiplying two numbers together.

- Chemistry -
**Anonymous**, Tuesday, July 17, 2012 at 4:05pm
1.2

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