Announcement (Chemistry) From BB7

Dear all,

Below is the Extra Class Timetable:

Date : 15 June 2009
Time : 10 a.m. - 12 p.m. and 1 - 3 p.m.
Venue : to be confirmed (come to yellow room to find out)

Date : 16 June 2009
Time : 10 a.m. - 12 p.m. and 1 - 4 p.m.
Venue : to be confirmed

See you all there.
Regards,
Mr. Lucas

Dear 0903PM10,

As you have already knew there is a few missing words to the questions that I gave you relating to the matter above. Here's the correction:

No.1, after the table there should be a question: Nitroglycerine undergoes Combustion to give CO2(g), NO2(g) and H2O(g) as products. Using the above data, construct a thermochemical cycle to calculate the standard enthalpy change of combustion of nitroglycerine.

In No. 3 part (a)(ii): calculate the standard enthalpy change of formation of methanol, and. The word 'of formation' is missing from the question.

In No. 5 part (b): Standard Enthalpy change of combustion of ethyne is -1299kJ mol-1. Standard enthalpy change of combustion of benzene is -3273kJ mol-1. The word 'of combustion' is missing.
Please make the necessary changes to the questions so that you can finish up the questions.
Once you've finish, you can check for the answers. I've uploaded it in Course Document, under a folder called 'Extra Question's Answers'. Do check it out.

Regards,
Mr. Lucas