destroyer chem #10

[RDH]

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the question states that if p is quartered while T is doubled by what factor V will change assuming n is constant?

The ans. is 8 but I keep getting 1. I keep thinking of PV/T where P and V are inversely proportional. so if we increase P by 4, V should be decresed by 4 (so would V be 1/4 of P) and we know that PV is directly proportional to T so doubling T would double V.

please help🙁

 

[tdkyun]

the question states that if p is quartered while T is doubled by what factor V will change assuming n is constant?

The ans. is 8 but I keep getting 1. I keep thinking of PV/T where P and V are inversely proportional. so if we increase P by 4, V should be decresed by 4 (so would V be 1/4 of P) and we know that PV is directly proportional to T so doubling T would double V.

please help🙁

Just rearrange the formula to v=nRT/p.
Since p is on the denominator 1/(1/4)=4 and T is doubled so..
4 times 2 is 8

 

[RDH]

Just rearrange the formula to v=nRT/p.
Since p is on the denominator 1/(1/4)=4 and T is doubled so..
4 times 2 is 8

are you saying that V is 1 and P is 1/4 of V and when you you do PV we end up with 4 then since T doubled we multiplied by 2? 1/(1/4) is where I am getting confused.

Thank you in advance

 

[pbure9]

the way youre thinking about it is also correct

if you quarter P, you actually increase V by 4 since they are inversely proportional. If T is doubled, you double V too, so therefore 4x2 = 8!

Hope that helps bro

 

[RDH]

ah thank you so much🙂