Edexcel IAL Chemistry Unit 2 (Old Syllabus) 22 May 2019

usman200186

Hello everyone, how was the exam. For me the ionic equations and other equations was the hard stuff only but overall the exam was easy for me. Let's discuss Evryone!

Reply 1

razan43

1

It was so hard , i wanted to cry

Reply 2

usman200186

OP

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Original post by razan43

It was so hard , i wanted to cry

Yeah I agree for some mcqs and equations. But apart from these the theory questions were easy. These questions just needed common knowledge, like the iodine and water one or magnesium flame color etc

Reply 3

razan43

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What about the MgO and MgOH questions? I didnt know how to solve them at all

Reply 4

usman200186

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Original post by razan43

What about the MgO and MgOH questions? I didnt know how to solve them at all

What was difficult in that question??

Reply 5

razan43

1

How to calculate the number of moles and stuff , honesty i forgot the questions

Original post by usman200186

What was difficult in that question??

Reply 6

usman200186

OP

10

Original post by razan43

How to calculate the number of moles and stuff , honesty i forgot the questions

Use concentration and mean volume to find moles of hcl. Then use mole ratio, it was 1:2 i think. Then multiply moles of hcl by 1/2 to find moles of MgO.

To find mass of absorbed water, MgO and water had 1:1 so multiply moles of Mgo × 18 to find mass of absorbed water.

To find mass of pure Mg(OH)2, add the mass of MgO and water....

These were basic calculations of moles...

Reply 7

carolinaaa

9

Apart from the titration question what were the answers for the other one ?

Reply 8

usman200186

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Original post by carolinaaa

Apart from the titration question what were the answers for the other one ?

I don't remember but those were 3× powers of 10^-3 or -4.

Reply 9

carolinaaa

9

Original post by usman200186

I don't remember but those were 3× powers of 10^-3 or -4.

Oh ok idk , anyone remembers answers ? For the moles of stones of iodine I just Kouriles thenppm value with the 1000kg divided by 1 million and then divided the mass by 2 atoms

Reply 10

usman200186

OP

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Original post by carolinaaa

Oh ok idk , anyone remembers answers ? For the moles of stones of iodine I just Kouriles thenppm value with the 1000kg divided by 1 million and then divided the mass by 2 atoms

Yeah its correct, but why you used 2 atoms? just divide it Mr of iodine (126.9)

Reply 11

carolinaaa

9

Original post by usman200186

Yeah its correct, but why you used 2 atoms? just divide it Mr of iodine (126.9)

Iodine has 2 atoms

Reply 12

usman200186

OP

10

Anyone remembers the answers for separating funnel in last question?
In the first part I wrote upper layer as colorless and lower as dark purple
In the next one I wrote upper as lighter purple and lower as purple

Reply 13

Archi93

5

Original post by usman200186

Anyone remembers the answers for separating funnel in last question?
In the first part I wrote upper layer as colorless and lower as dark purple
In the next one I wrote upper as lighter purple and lower as purple

u did d new syllabus?

Reply 14

usman200186

OP

10

Original post by Archi93

u did d new syllabus?

I know this same question was in new syllabus cuz my friend told me. But I did the old one

Reply 15

Archi93

5

anybody did the new syllabus?

Reply 16

Sara aliyeva

5

Wait... we had to write the colours...? 😟😟😟
I just wrote aqueous layer and the other. GOD WHY DO I DO THIS?

Original post by usman200186

Anyone remembers the answers for separating funnel in last question?
In the first part I wrote upper layer as colorless and lower as dark purple
In the next one I wrote upper as lighter purple and lower as purple