Anyone have a worked solution to this 2021 jrahs back titration calc? (1 Viewer)

[jc7726]

The marking guide legit says "correct calcs"

 

[jc7726]

this is kinda urgent, exam in a couple hours i was doing some extra revision. I got the mass as 0.01472...g which i think is wayyyyy too far off of the 0.5g ballpark needed to be correct

 

[SadCeliac]

OH I remember this question - let me find my solution

 

[SadCeliac]

 

[SadCeliac]

sorry if my working is a bit all over the shop - I can try decipher what it was if you'd like?

 

[jc7726]

i think i figured it out just a couple minutes ago, thank u

 

[jc7726]

wait no i just did something wrong mines off by a factor of 10^-1

 

[SadCeliac]

wait no i just did something wrong

did you compare with my solution...?

 

[jc7726]

okay i figured it out, it was because for some reason i put the 20mL as 0.2 instead of 0.02 lmao

 

[jc7726]

did you compare with my solution...?

yes i found out ^ using it thanks for ur help

 

[SadCeliac]

okay i figured it out, it was because for some reason i put the 20mL as 0.2 instead of 0.02 lmao

hahaha fair enough - it happens

 

[jc7726]

hahaha fair enough - it happens

that trial paper i just had was more difficult than those ruse papers could have prepared me for

 

[carrotsss]

that trial paper i just had was more difficult than those ruse papers could have prepared me for

was it a commercial paper or ur schools paper?

 

[jc7726]

was it a commercial paper or ur schools paper?

it would have been a possibly slightly modified commercial, my school doesn't write their own but they change them a bit i think