Qualification > Sciences
ALL CIE CHEMISTRY DOUBTS HERE !!
cs:
Yes Deadly King, the examples are exactly what i asked, so water is "eliminated", and the other one is reduced. Thank you so much. +REP as usual. Great help
Deadly_king:
--- Quote from: cs on October 15, 2010, 12:40:37 pm ---Yes Deadly King, the examples are exactly what i asked, so water is "eliminated", and the other one is reduced. Thank you so much. +REP as usual. Great help
--- End quote ---
Yeah......most of the time, water is eliminated but in some case HCl or HBr may also be eliminated, depending on the structure of the reacting compound :)
Anytime dear ;)
$!$RatJumper$!$:
Guys, for AS chemistry in practicals, when they tell us to calculate answers in which we have to use q=mc(delta)t, i know that c=4.2, (delta)t is easy to calculate from our results, but m, i have no idea where to get it from :/ All i have are the volumes and not masses. Can i use volumes for the value of m in the equation?
If this isn't clear, i am basically referring to S10 P33 Chemistry (9701) question 1(c)(i).
Thankx
ashish:
--- Quote from: $!$RatJumper$!$ on October 16, 2010, 07:54:03 pm ---Guys, for AS chemistry in practicals, when they tell us to calculate answers in which we have to use q=mc(delta)t, i know that c=4.2, (delta)t is easy to calculate from our results, but m, i have no idea where to get it from :/ All i have are the volumes and not masses. Can i use volumes for the value of m in the equation?
If this isn't clear, i am basically referring to S10 P33 Chemistry (9701) question 1(c)(i).
Thankx
--- End quote ---
yes you must take the total volumes as M
Deadly_king:
--- Quote from: ashish on October 17, 2010, 02:25:35 am ---yes you must take the total volumes as M
--- End quote ---
Yupz.......m is taken as the total volume of solutions which you used when measuring the temperature change. ;)
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