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Chemistry unit 6 June 2016

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Did anybody get the Kc Value to be 0.351?

Dw a few people here have already confirmed they got this.

As for me I don't have a clue as to what I got in this yesterday as I just had a 2 hour Eco exam and a 3 hour Accounts exam today :tongue:

Reply 321

Sandy_Vega30

Original post by Mehodax

Dw a few people here have already confirmed they got this.

As for me I don't have a clue as to what I got in this yesterday as I just had a 2 hour Eco exam and a 3 hour Accounts exam today :tongue:

OMG! Thanks so much! I hope your exams went well! How was it?

Reply 322

jasonqqqq

What is the effect on Kc value when student B use NaOH concentration less than 0.05moldm-3?

Reply 323

Sandy_Vega30

Original post by jasonqqqq

What is the effect on Kc value when student B use NaOH concentration less than 0.05moldm-3?

No effect on Kc. Kc is only affected by changes in temperature not concentration, or pressure.

Reply 324

jasonqqqq

Original post by Sandy_Vega30

No effect on Kc. Kc is only affected by changes in temperature not concentration, or pressure.

i think so , but some of great students state that that is a error in calculating the kc value for studentB , so kc has changed... the i don't understand what they are talking about

Reply 325

Aimen.

Original post by jasonqqqq

What is the effect on Kc value when student B use NaOH concentration less than 0.05moldm-3?

There is no effect but I did in last seconds and something went wrong with my crazzy mind and I wrote that since products decrease kc would decrease but it isn't so actually!

Reply 326

PlayerBB

Original post by Aimen.

There is no effect but I did in last seconds and something went wrong with my crazzy mind and I wrote that since products decrease kc would decrease but it isn't so actually!

This what happened with me as well, my mind went crazy and wrote the same in the last few minutes if the exam!

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Reply 327

PlayerBB

Original post by jasonqqqq

i think so , but some of great students state that that is a error in calculating the kc value for studentB , so kc has changed... the i don't understand what they are talking about

I don't remember exactly what I wrote but it had to do that Student B missed some steps including recrystallisation, many impurites will still be there and the value of Kc will decrease however I believe it's wrong because Kc is only affected by temperature

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