Oh sorry 2e the faraday's constant oneare u sure ur asking the right question from the right year? Part 1 d of w08 is not abt the gradient...
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Oh sorry 2e the faraday's constant oneare u sure ur asking the right question from the right year? Part 1 d of w08 is not abt the gradient...
I just tagged another sister who had the same doubt this morning... let's see if she got the answer.. otherwise, let's attack our teachersJazakAllah for the reply sis but what to do about this question then ?
1 mol of Cu 2+ = 2 FaradaysOh sorry 2e the faraday's constant one
I just tagged another sister who had the same doubt this morning... let's see if she got the answer.. otherwise, let's attack our teachers
For this we fix the volume. I keep it 20cm^3 for each acid. Then depending on whether the acid is monobasic or dibasic, write the conc. i.e., 2.0 mol/dm^3 for monobasic and 1.0 mol/dm^3 for dibasic. Once you've set the conc. and volume, calculate the moles for each separately for the complete experiment (here the question just requires moles and hence mass for ethanedioic acid, so calculate for this and leave the rest).o and oct/nov 2009 Q1) d) how are we supposed to vary the range of concentrations, because whenever i am converting it to the voume of the soltion needed i keep getting volumes exceeding 30 cm^3 and what on earth are we supposed to calculate [diacid] and [monoacid]
where did you get 1g=3000C from ?1 mol of Cu 2+ = 2 Faradays
63.5g = 2F
1g = 3000C
2F= 63.5 x 3000
F= 95 250 C/mol
Am i clear?
mass of solid/mass of water x 100are you guys doing mass of solid/ mass of solution x 100?
Aww aameen inshaAllah <3 i pray the same for you sisSoldier313 thank you SOSOMUCH that was such a great explanation!
I'll pray you get what you want out of these exams In Shaa Allah!!
- one last thing, how do I calculate the weak acids then???
The data bookletwhere did you get 1g=3000C from ?
Is it the same thing? i forgot the year we were discussingmass of solid/mass of water x 100
i guess M/J 09 Q2 aIs it the same thing? i forgot the year we were discussing
Oh yea, Jazaki Allahi guess M/J 09 Q2 a
and u ZariOh yea, Jazaki Allah
umm, i uploaded a photo a few pages back Soldier313 u might wanna take a look at my table
So what do u learn? That when the questions says line of best fit, it can also be a curve of best fit no?anyone please help me with this:
in a few qs such as JUNE/11/52 it is clearly stated that we have to draw a LINE OF BEST FIT but in the mark scheme it is written that NO MARKS FOR A STRAIGHT LINE ! EXAMINER'S JUDGEMENT ON THE BEST-FIT CURVES !
um but how do we decide?So what do u learn? That when the questions says line of best fit, it can also be a curve of best fit no?
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