Learn the tests and the most common reactions. Some organic and group 2 7 may help. But most importantly... past papers. I got a b in the mock but i want to get an a next week. When is your exam ? Mine is on tuesday
Learn the tests and the most common reactions. Some organic and group 2 7 may help. But most importantly... past papers. I got a b in the mock but i want to get an a next week. When is your exam ? Mine is on tuesday
My problem is with the practicals, preparing organic compounds, titrations, salts etc. I haven't done a single experiment in my life lol. Mine is on Tuesday too.
My problem is with the practicals, preparing organic compounds, titrations, salts etc. I haven't done a single experiment in my life lol. Mine is on Tuesday too.
Just go trough them in the book, honestly i don't remember any of the practicals i've done this year. As long as you are good at reasoning and confident with your calculations you should be ok.
Senpai has noticed you! Well u see Mangnate is a strong oxidizing agent and we usually use it during the conversion of any alkene to a Di-Alcohol. In case of dichromate in our AS we use them in preparation of Ketone, Aldehydes (and carbooxylic acids as well) we use a milder oxidation agent(dichromate) so that the alcohol is not completely oxidized before we have the chance to distill it off. Hope it helps
Someone help me with the use of Potassium/Sodium Manganate and dichromate. When should I use each and what will be the results?
NOTICE ME SENPAII
there are various uses of these potassium dichromate is used with dilute h2so4 to oxidise a primary alcohol to an aldehyde or a carboxylic acid and changes from orange (cr2o7)2- to green (Cr)3+ potassium manganate is used to test for SO2 or an alkene and changes from purple to colorless in both cases
senpai has noticed you! Well u see mangnate is a strong oxidizing agent and we usually use it during the conversion of any alkene to a di-alcohol. In case of dichromate in our as we use them in preparation of ketone, aldehydes (and carbooxylic acids as well) we use a milder oxidation agent(dichromate) so that the alcohol is not completely oxidized before we have the chance to distill it off. Hope it helps
there are various uses of these potassium dichromate is used with dilute h2so4 to oxidise a primary alcohol to an aldehyde or a carboxylic acid and changes from orange (cr2o7)2- to green (cr)3+ potassium manganate is used to test for so2 or an alkene and changes from purple to colorless in both cases
My problem is with the practicals, preparing organic compounds, titrations, salts etc. I haven't done a single experiment in my life lol. Mine is on Tuesday too.
lol u dont need any! just focus on the pastpapers and memo the method.. i never took any lab class seriously
Senpai has noticed you! Well u see Mangnate is a strong oxidizing agent and we usually use it during the conversion of any alkene to a Di-Alcohol. In case of dichromate in our AS we use them in preparation of Ketone, Aldehydes (and carbooxylic acids as well) we use a milder oxidation agent(dichromate) so that the alcohol is not completely oxidized before we have the chance to distill it off. Hope it helps
How did the paper go? What's a test for water vapour? -_- What reagent and conditions were needed for converting that halogenoalkane to an alkene? Did you get enthalpy change for CH3OH as somewhere around 400-ish? Enthalpy change from graph was -1800.
How did the paper go? What's a test for water vapour? -_- What reagent and conditions were needed for converting that halogenoalkane to an alkene? Did you get enthalpy change for CH3OH as somewhere around 400-ish? Enthalpy change from graph was -1800.
Blue cobalt chloride paper turns pink Alcoholic KOH and reflux Yes No, it was around 1200-1250