9701 Chemistry::::::Paper 5 Doubts

[XPFMember]

Assalamoalaikum!!

Since I'm solving Paper 5 these days, and having a lot of doubts, so I'm creating this thread to put all the doubts here!

Jazak Allahu Khairen! May Allah give you the best reward (for all the help)! Aameen!

So here's the first question!

Q:1 (c) of 9701 Nov:2007 Paper:5

Putting up the list of all the questions below, so it's easy for everyone to browse through! I'll be updating this list, time to time!

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Nov:2007

• Q:1 (c)

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[AAestar]

Re: 9701 Chemistry:::::aper 5 Any tips?

This is an exothermic reaction. And so heat is lost to the surrounding. In normal case, we would conduct the experiment by dipping the thermometer into the solution in the beaker. And can you spot the error now??

Heat is lost to the surrounding via evaporation. A lid could be used to cover the mouth of the beaker, preventing heat loss.
Second, place some insulations around the beaker to prevent heat loss from the sides of the beaker...

I hope I helped. But do check the marking scheme to see if my answers are correct. Am still groggy here. ^^

 

[XPFMember]

^Jazak Allah Khair!!

I'm stuck in Q:2 (f) of June:2008 :unknown: