Welll....let's just say it didnt go too great.... It wasn't that bad, but a few questions were weird and I ran out of time π
How did you find it?
It was awful! The 6 marker was great! But some of the calculations annoyed me ππ I got n as 2.25. πππ????? That percentage yield was awful. I guessed and got 39.1% lol! I hope the grade boundaries are low.
Some of the questions are soo similar to the 2016 unit 3 IAL PAPER ! Like drawing the seperating funnel π But I give up with chem! Defo dropping it next year!
It was awful! The 6 marker was great! But some of the calculations annoyed me ππ I got n as 2.25. πππ????? That percentage yield was awful. I guessed and got 39.1% lol! I hope the grade boundaries are low.
Some of the questions are soo similar to the 2015 unit 3 IAL PAPER ! Like drawing the seperating funnel π But I give up with chem! Defo dropping it next year!
Oh my gosh I 100% agree with the calculations The paper was just weird π I used to think I was alright at chemistry but I guess not xD
Ughhh I wish I could drop it, but i desperately need to drop physics ππ
I got n=2.25 so I rounded it down to 2 as it had to be a whole number. I'm not sure if it's right, but the fact that it's not a whole number is explained by the question after, so maybe it is.
Moles of NaOH = 0.103x16.20/1000 =0.0016686 Moles of H2C2O4 = 0.0016686/2 = 0.0008343 mol Moles in 250 cm3 = answer x 10 = 0.008343 Mass of H2C2O4 = 90 x 0.008343 = 0.75087 g Mass of Water = 1.09 - 0.75087 then I did empirical formula then got n as being 2.25 ππ I hope I didn't read the concentration wrong
I got n=2.25 so I rounded it down to 2 as it had to be a whole number. I'm not sure if it's right, but the fact that it's not a whole number is explained by the question after, so maybe it is.
I got that!!! It doesn't have to be a whole number. I think the 2016 IAL UNIT 3 paper for January had a similar question and n was a decimal
Moles of NaOH = 0.103x16.20/1000 =0.0016686 Moles of H2C2O4 = 0.0016686/2 = 0.0008343 mol Moles in 250 cm3 = answer x 10 = 0.008343 Mass of H2C2O4 = 90 x 0.008343 = 0.75087 g Mass of Water = 1.09 - 0.75087 then I did empirical formula then got n as being 2.25 ππ I hope I didn't read the concentration wrong
I did the exact same too! Should be worth a couple either way... We can only hope