Clau.LP Posted May 21, 2014 Report Share Posted May 21, 2014 I think all papers were good but question one from paper 2 what did you write for ethanoic acid concentration? I still dont get it... Reply Link to post Share on other sites More sharing options...
tiffany_wu888 Posted May 22, 2014 Report Share Posted May 22, 2014 honestly i thought p1 was very very easyp2 though..LOL..probably be lucky to get a 50/90p3 i did biochem+food chem; failed biochem, foodchem was easy thoughhopefully my scores will balance out?!?! 1 Reply Link to post Share on other sites More sharing options...
tiffany_wu888 Posted May 22, 2014 Report Share Posted May 22, 2014 honestly i thought p1 was very very easyp2 though..LOL..probably be lucky to get a 50/90p3 i did biochem+food chem; failed biochem, foodchem was easy thoughhopefully my scores will balance out?!?! Reply Link to post Share on other sites More sharing options...
Guest Posted May 25, 2014 Report Share Posted May 25, 2014 Our teacher taught us Option D and E, but I found option E to be horribly boring, and considering the fact that I do HL Biology anyway, figured I might as well self-teach Human Biochem No regrets either because my classmates came out of the exam in a state of shock over Option E and omg, Human Bicohem was so, so easy. What did you guys get for the product of the distearin question? I put down Stearic acid And the question about why that chemical wasn't an anabolic steroid was because it didn't have four fused rings, right? Reply Link to post Share on other sites More sharing options...
Guest Posted May 25, 2014 Report Share Posted May 25, 2014 Our teacher taught us Option D and E, but I found option E to be horribly boring, and considering the fact that I do HL Biology anyway, figured I might as well self-teach Human Biochem No regrets either because my classmates came out of the exam in a state of shock over Option E and omg, Human Bicohem was so, so easy. What did you guys get for the product of the distearin question? I put down Stearic acid And the question about why that chemical wasn't an anabolic steroid was because it didn't have four fused rings, right? Reply Link to post Share on other sites More sharing options...
Abdelbari Posted May 25, 2014 Author Report Share Posted May 25, 2014 Now 24 hrs is up too for P3 tz2, how did everyone find it? I did options D and E, I found both options good overall but i hate the absurdity of option E regarding the solubility product calculation. In general it was harder than last year's... I did option E as well and the calculation annoyed me so much! I did past papers from last year to 2010 and every single Ksp calculation was the same, then we get that! The remembering equations wasn't great either. I did options D and E as well! I think option D was quite nice, asking about the acids in the stomach and all was a give away and there was nothing that threw me off too much. For the Ksp equation in E, I completely ignored the concentrations given in the question and wrote as my assumption that the concentrations of the two solvents or whatever they were (can't even remember anymore! Haha) were the same, then continued calculating it as shown in textbooks. I obviously must have done something wrong but I might get 2 out of 4 marks for it (if even) I also really liked option D , do you remember the question about increased potency of diamorphine, was it about the polarity. Also remember the similarities of structures between mescaline and psyclobine, was it okay if we actually drew the structures for similarities and differences? I also ignored the concentrations and just did the traditional way, most ppl did it the traditional way so hopefully it's correct , I think the cocentrations given were only to confuse us or to be used as a proof... Reply Link to post Share on other sites More sharing options...
Abdelbari Posted May 25, 2014 Author Report Share Posted May 25, 2014 Now 24 hrs is up too for P3 tz2, how did everyone find it? I did options D and E, I found both options good overall but i hate the absurdity of option E regarding the solubility product calculation. In general it was harder than last year's... I did option E as well and the calculation annoyed me so much! I did past papers from last year to 2010 and every single Ksp calculation was the same, then we get that! The remembering equations wasn't great either. I did options D and E as well! I think option D was quite nice, asking about the acids in the stomach and all was a give away and there was nothing that threw me off too much. For the Ksp equation in E, I completely ignored the concentrations given in the question and wrote as my assumption that the concentrations of the two solvents or whatever they were (can't even remember anymore! Haha) were the same, then continued calculating it as shown in textbooks. I obviously must have done something wrong but I might get 2 out of 4 marks for it (if even) I also liked option D , but if you remember the question about increasing potency of diamorphine, was it increasing polarity? One questions was discuss the similarities and differences between mescaline and psyclobine, was it okay if you just drew the structures? In option E I also ignored the concentrations, and a lot of people calculated the traditional way, hope it's correct .... I think the concentrations were only given to confuse us or to be used as proof.... Reply Link to post Share on other sites More sharing options...
Abdelbari Posted May 25, 2014 Author Report Share Posted May 25, 2014 Now 24 hrs is up too for P3 tz2, how did everyone find it? I did options D and E, I found both options good overall but i hate the absurdity of option E regarding the solubility product calculation. In general it was harder than last year's... I did option E as well and the calculation annoyed me so much! I did past papers from last year to 2010 and every single Ksp calculation was the same, then we get that! The remembering equations wasn't great either. I did options D and E as well! I think option D was quite nice, asking about the acids in the stomach and all was a give away and there was nothing that threw me off too much. For the Ksp equation in E, I completely ignored the concentrations given in the question and wrote as my assumption that the concentrations of the two solvents or whatever they were (can't even remember anymore! Haha) were the same, then continued calculating it as shown in textbooks. I obviously must have done something wrong but I might get 2 out of 4 marks for it (if even) I found option D to find quiet easy , by the way what did you understand from the increased potency of diamorphine? was it increased polarity? And for the similarities and differences between mescaline and psyclobin, is it okay to just draw the structures? Man for ksp most of my friends and I did the same traditional method and you did? I hope then its correct... Either they put it to just confuse us or to proof something... Reply Link to post Share on other sites More sharing options...
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