The Student Room Group

Calculating partial pressure

What am I doing wrong? Correct answer is 1.52x10^6

I got mole fraction of c as 0.76/0.78

And then multiply by the total pressure in the system

To get 7.79x10^6
Reply 1
Honestly, I tried working it out for a solid 10 minutes and I can't get that answer either no matter what wacky way I change the formula to work backwards. Guess we're both stumped
Reply 2
Original post by 048243
Honestly, I tried working it out for a solid 10 minutes and I can't get that answer either no matter what wacky way I change the formula to work backwards. Guess we're both stumped


same here
Reply 3
Original post by banana_joe
same here

I really don't like the way that question is worded. It seems vague I'm not sure why
Reply 4
Maybe the paper is wrong? In the mark scheme what they do is

(0.76 x 8x10^5 ) / 0.4

But I don’t understand why they did this

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