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Chemistry: Post your doubts here!

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do
We did that paper, and well wen u do it, the temp change you get, first increases and then decreases. So when you plot and draw you get One graph that goes up and another that comes down. U then extrapolate it and you get like a upside down V.
Hope u get it.
u have skype?
 
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For enthalpy experiments, use insulating material, and use an electronic thermometer that takes more accurate readings.
For titration, take multiple titration readings, and if there's anything interfering with the titration, get rid of it somehow (by heating, or filtering if it is a solid, etc...)
For salt analysis there is the most. If there is a color change involved, use a colorometer instead of eyes. If there is a gas produced, use a white background to notice it, and note the smell. If there is heating involved, make sure no heat is lost, etc... You can even make up your own.

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What does an amorphous solid look like? Will we ever be given one, or will we always be given crystalline solids to identify?
Thank you :)
 
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can any 1 explain me what is a rough titration ??
Thats when U do a titration by letting the liquid from a burette through 1cm3 by 1cm3..and where u observe a colour change is your rough estimate..
u then go on with ur second titration..and suppose ur rough estimate was 28cm3 or somethin..u then let the solution flow through till around 25 and then do it drop wise to determine the correct end point!!

Basically rough titration gives u a rough estimate!!
 
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