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Chemistry: Post your doubts here!
From whatever I've learnt ..I've never come across a reaction in which an alcohol turns an ester in to a Carboxylic acid salt ( where did the salt come from? There was no metal or any electronegative element except for O ..only hydrocarbons... for e.g ; CH3COOCH3 + CH3CH2OH ---> ?) Where... -
Chemistry: Post your doubts here!
Q34 Only 1 is correct because according to Le Chateliers principle Temp increase favours endothermic reaction. an equilibrium mixture N2F4(g) 2NF2(g); ∆H positive (ENDOTHERMIC) Q40 Again only 1 is correct as esters react with -COOH groups (Hydrolysis) With alcohols (ethanol) X X NaHCO3 is not... -
Physics: Post your doubts here!
I I actually do get it now and I realize its so simple . Its just that as we move in the y direction at that very same displacement ....from the rest position (x line). Thankyouu! -
Physics: Post your doubts here!
Tysmm for the answerss and Can you explain a bit about how you knew that it will occur lamda/4 and lamda later ? -
Chemistry: Post your doubts here!
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_m16_qp_12.pdf Q37 (I thought only 1 was correct) 38 ( How does Cl act as catalyst ??) 39 ( I thought only 1 was correct) and 21(How can it be cis-trans the end of chain H and CH2OH are just rotated -
Physics: Post your doubts here!
Q10 20 22 24 26 29 31 37 39 ?? PLEASE EXPLAIN!! http://papers.gceguide.com/A Levels/Physics (9702)/9702_w16_qp_12.pdf -
Chemistry: Post your doubts here!
Can anyone help me out on the Physics Questions I posted in the physics thread?? < Had to post it here as no one was answering> -
Chemistry: Post your doubts here!
OMg that was extremely helpful I can't thank you enough! (y):) I couldn't comprehend this in question but thanks to you now I just realized that we look at both sides of the C=C -
Physics: Post your doubts here!
http://papers.gceguide.com/A Levels/Physics (9702)/9702_w16_qp_12.pdf Q10 20 22 24 26 29 31 37 39 ?? -
Chemistry: Post your doubts here!
How do you know that what will form ..can you explain in detail? :/ I'm really bad at Organic Chemistry. -
Physics: Post your doubts here!
You did everything right. you just replace q with n*e -
Physics: Post your doubts here!
Q34 P = I^2 R 4.0=I^2(20) Current in circuit = 0.45 A V=Ir = 0.45*20 = 9.0 V From kirchhoff's 2 law 16= 9+0.45R R= 16 Q38 -
Chemistry: Post your doubts here!
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w16_qp_13.pdf Q37 and 20 Anyone?? -
Chemistry: Post your doubts here!
"N" + ½O2 → NO nitric oxide (gas) NO + ½O2 →fast→ NO2 nitrogen dioxide NO is diatomic And it is polar as it contains electro-negative N I think A is correct .... ? -
Chemistry: Post your doubts here!
Q10 Ans = C Kc>1 tells you that the equilibrium will lie to the right, H2(g) + I2(g) <==> 2HI(g) .................. Kc = 60. 2M .......0.3M ............?M Kc = [HI]² / ([H2] [I2]) 60 = x² / 2 / 0.3 x = 6 [HI] = 6M moles of HI = 6 Q5 Q=VxCxdeltaT total volume is 25+25 = 50 cm3 = 50 x... -
Chemistry: Post your doubts here!
ONLY THE LAST ONE CANCELS OUT. -
Chemistry: Post your doubts here!
http://papers.gceguide.com/A%20Levels/Chemistry%20(9701)/9701_w16_qp_13.pdf Please Explain : Q 3 ,20, 37 and 16 -
Chemistry: Post your doubts here!
CAN SOMEONE THIS QUESTION?? ANSWER = B -
Chemistry: Post your doubts here!
OH! Thats how we do It I was a bit confused. Thankss it did help :) -
Chemistry: Post your doubts here!
Thankyou but, I know this equation its just that I don't think it's working on that question..( I was getting a wrong answer).