- Messages
- 275
- Reaction score
- 43
- Points
- 38
Can someone give explanations to the following paper 1 questions...
Thanks.....
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w02_qp_1.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w02_er.pdf
Q3 How do we work out the answer?
Q16 and Q26?
Q3. According to the definition of enthalpy change of ionisation, an electron should be removed from a gaseous atom for first ionisation energy. Two electrons for second ionisation energy. Then, you just have to use the Data Booklet. Adding the first and second ionisation energies of Aluminium gives us 2397. In the four options available, only Cobalt has the same sum of first and second ionisation energies.
Q16. CIE just likes giving questions about CaCO3. lol. I don't know the answer.
Q26. This one is about reaction of alkenes with cold dilute solution of Potassium Manganate. But since the answer given is C, and C has phenyl groups, I am not really sure if this one is a part of the syllabus. You may ask your teacher for further details about this one.