IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: thecandydoll on May 27, 2010, 03:05:19 am

Title: Chemistry Practical PAPER DOUBT =)
Post by: thecandydoll on May 27, 2010, 03:05:19 am

I have a doubt in practical paper June 2008 32.
Q1..it says to calculate enthalpy of reaction.
HOW?
i know its mcdeltat
but masss of what?

Title: Re: Chemistry Practical PAPER DOUBT =)
Post by: thecandydoll on May 27, 2010, 04:36:58 am

Yes thank you very much for your answerrs =(

Title: Re: Chemistry Practical PAPER DOUBT =)
Post by: nid404 on May 27, 2010, 07:10:53 am

sorry i guess im late. You use the mass of the solution.

Basically density of the solution would be 1g/cm3  so 1g=1cm3  So you see the volume of the liquid used...that's the mass ;)

Title: Re: Chemistry Practical PAPER DOUBT =)
Post by: Ykov on May 27, 2010, 02:35:39 pm

Please Note: If they give you mass of the solid, ignore it completely please and just use the mass of the solution