Chemistry Predictions/Thoughts (3 Viewers)

[askit]

How harshly penalised would I be for the 7 marker about XYZ, if I didn't calculate the moles of each and use the molar mass? - Got order right and used all the other data kinda just forgot about the mass rip

 

[ManifestationIsKey]

How harshly penalised would I be for the 7 marker about XYZ, if I didn't calculate the moles of each and use the molar mass? - Got order right and used all the other data kinda just forgot about the mass rip

Maybe two marks lost because it was just a simple c = n/V question, there was nothing much to do except for Z u had to use a mol ratio. Btw the order was Y, X, Z right or am i tripping

 

[askit]

Maybe two marks lost. Btw the order was Y, X, Z right or am i tripping

Yep - hopefully its just two, I think my explanation for everything else was solid

 

[askit]

What do you reckon you guys got raw?

 

[Steve 340]

depends on how much I lose for the last Q.

Hopefully 98

 

[askit]

depends on how much I lose for the last Q.

Hopefully 98

Damn nice, gunning for sr? I'm hoping for 92+ depending on how they mark the 7 marker and my writing

 

[Ishi081]

Maybe two marks lost because it was just a simple c = n/V question, there was nothing much to do except for Z u had to use a mol ratio. Btw the order was Y, X, Z right or am i tripping

I mean it doesnt say to calculate the moles. or did it? and it also didnt say to use all the information provided.

 

[herbimycin]

guys i think i only got a 99 raw i coloured the wrong circle on q17 but had the right answer in my head. idk how i did this badly am i cooked?

 

[Steve 340]

Nah not sr, my school isn't great at sciences and people would have gotten the last question right.

Damn nice, gunning for sr? I'm hoping for 92+ depending on how they mark the 7 marker and my writing

 

[askit]

I mean it doesnt say to calculate the moles. or did it? and it also didnt say to use all the information provided.

Hopefully they mark leniently but they would want you to use all the given data imo

 

[ManifestationIsKey]

I mean it doesnt say to calculate the moles. or did it? and it also didnt say to use all the information provided.

Nah you had to match titre volume using the concentrations they provided. I think.

 

[appleali]

mcq was not too bad right?

 

[appleali]

Nah you had to match titre volume using the concentrations they provided. I think.

i calced molar mass instead

 

[ManifestationIsKey]

i calced molar mass instead

I mean thats fine as well. Either way you get the identity of the required species.

 

[Ishi081]

does anybody have the solutions to the questions?

 

[ManifestationIsKey]

Like for titre volume if you match it (you have to use a mol ratio for Z btw) you get that Y and Z have the same titre volume. But since Z is symmetrical it is the third 1.

 

[appleali]

Like for titre volume if you match it (you have to use a mol ratio for Z btw) you get that Y and Z have the same titre volume. But since Z is symmetrical it is the third 1.

yeh that was fine

 

[herbimycin]

Q35 was "Identify which structures 1, 2 and 3 in the table are acids X, Y and Z. Justify your answer with reference to the information provided." Surely we dont have to refer to it all, they gave so much info that you didn't really need

 

[appleali]

Q35 was "Identify which structures 1, 2 and 3 in the table are acids X, Y and Z. Justify your answer with reference to the information provided." Surely we dont have to refer to it all, they gave so much info that you didn't really need

bro i talk about all info just in case. like for the one with the h-nmr i talked about every single data point and the environment each peak was from

 

[lidess23]

Like for titre volume if you match it (you have to use a mol ratio for Z btw) you get that Y and Z have the same titre volume. But since Z is symmetrical it is the third 1.

The titration data couldn’t actually be used to distinguish between Y and Z right. I just used it as a confirmation, after using the 2 other data to determine the compound identities.