# A level chemistry rates help

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#1
Hi, I was wondering if anyone could please mark my answers for me as my teacher didn’t give us the answers.
Thank you!!

For 3) a). B as 1st order, A as 2nd and C as 0
b). K = 1.02x10^-3
units: mol^-2 dm^6 s^-1

For 6). a) i). (on photo)
ii). K = 3750
units: mol^-2 dm^6 s^-1

For the last one a). (on photo)
b). K = 0.15
Units: mol^-2 dm^6 s^-1
Last edited by Mavs04; 1 month ago
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1 month ago
#2
(Original post by Mavs04)
Hi, I was wondering if anyone could please mark my answers for me as my teacher didn’t give us the answers.
Thank you!!

For 3) a). B as 1st order, A as 2nd and C as 0
b). K = 1.02x10^-3
units: mol^-2 dm^6 s^-1

For 6). a) i). (on photo)
ii). K = 3750
units: mol^-2 dm^6 s^-1

For the last one a). (on photo)
b). K = 0.15
Units: mol^-2 dm^6 s^-1
Hey

Q3 is all fine,

most of Q6ai) is good except for experiment 4 value for Q [easy to check these calculations by putting them back into the rate equation to see if you end up with the correct initial rate], Q6aii) is good

Q7 I would put the answer to experiment 3 as 0.40 but otherwise is fine
1
#3
(Original post by EierVonSatan)
Hey

Q3 is all fine,

most of Q6ai) is good except for experiment 4 value for Q [easy to check these calculations by putting them back into the rate equation to see if you end up with the correct initial rate], Q6aii) is good

Q7 I would put the answer to experiment 3 as 0.40 but otherwise is fine
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