Recent content by Prabs3257

Thanks a lot man i got the answer

I first got the velocity of the combined mass with conservation of momentum and as it was in the mean position the velocity can be written as v = wA ( w= angular frequency , A = amplitude ) as we have to take it back to natural length i put A as the initial extension but i am getting a wrong ans...

by using the Henderson-Hasselbalch equation i got the correct answer

i think after adding naoh only bcl boh and nacl should remain in the solution according to the equation bcl + naoh == boh + nacl

ohh i got it now thanks a lot

nh4+ and cl-

by adding ammonia and hcl you should by adding ammonia and hcl you should get nh4cl

isnt there b+ from bcl which was formed ?? sorry i am confused right now

please correct me if i am wrong is it that before adding there is b+ ions(1.6 moles) from boh and now by adding 0.4 moles of naoh they both react to form boh (which acts as the weak base in the buffer) and as naoh is limiting reagent we have b+ ions left which are now 1.2 moles which act as the...

that is the problem i don't understand why is their a buffer ?? can you please write the reactions on how the buffer is formed what are its constituants

its 20 ml hcl right and the reaction would be boh + hcl == bcl +h2o and in the resulting solution we will have only bcl and h2o right ?? i have done a few calculations and i got the concentration of bcl as 0.04 in the mixture and then with the concept of hydrolysis i calculated the pkb of boh...

i think it means when the equivalents of acid and base are equal we get the end point

i am having a problem in understanding the question , what will be the volume of hcl ? and how is the reaction going to take place ? please help me i am stuck on this problem for quite a long time.

I know its because of tautomerism that they form an aldehyde group because of which they give the test but can all alpha hydroxy ketones give tollens test or only those in which hydroxy group is on the terminal carbon ??

ohh no really sorry i did the calculations again and got the correct answer just did a multiplication error earlier :sorry: i thought i was conceptually wrong really sorry for all the trouble to everyone and thanks a lot for your help