1/2O2--->O(g) in born haber cycle.. right after DHatm of the metal.
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HOW WAS CHEMISTRY P42 MAY/JUNE 2017 (POLL)
- Thread starter darks
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thank youuuuuuuu
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Keq3= kstab2/ kstab 1
lattice energy was -2280 KJ
Delta G was -111.92
Delta H was 8
PH of amino acid was 5.43
lattice energy was -2280 KJ
Delta G was -111.92
Delta H was 8
PH of amino acid was 5.43
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What were the values of n?
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Whoever voted for the paper being 'normal', MashaAllah man. Kudos to you. You're one special piece.
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I hope the threshold is 40-45 for A. The worst gt I have seen was 48 but this year, it seemed to be one of the hardest question ever made.
It was really hard to complete such a question within 2 hours. It was like a 2.5-3 hours paper.
It was really hard to complete such a question within 2 hours. It was like a 2.5-3 hours paper.
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What about the Mr and RCOOH question guys?
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It was a mess
Can't even recall answers
Really depressed

Can't even recall answers
Really depressed

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Mr was 122 afai remember. R was C6h5 most probably
most friends and i got mr 185...
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You guys scared me!! I am doing p41 in an hour! :/
how did u calculate?
what did you get? i used moles of the previous part in n=m/mr. i think mr= 1/0.0054. Again i am not 100% sure that i am correct.
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You took the remaining moles to calculate Mr and I took the initial no of moles in 1g acid to calculate Mr.
I calculated 1/(8.2 x 10^-3) = 122