Acids and bases | November 2022 | Question 7 | Mlungisi Nkosi
Жүктеу.....
Пікірлер: 10
@_https.Plisto10 ай бұрын
Sir if this was a neutralization how is it possible that NaOH still had moles left
@MlungisiNkosi
10 ай бұрын
Great question… So you’ll see that it isn’t titration where the acid and base completely neutralise each other. In this case the base partially neutralised…
@_https.Plisto
10 ай бұрын
Ohh okay cool
@calvinbafshoe2626 Жыл бұрын
When solving this question of calculating concentration of hydroxide ions i though of ionization of water Kw however i was kinda stuck cause i wasn't told that this is happening at a temperature of 25 degrees. Should we assume?
@MlungisiNkosi
Жыл бұрын
When in doubt, it’s safe to assume otherwise we reach a stalemate. However I do admit that examiners must not leave out such crucial details
@mohamadhussainkhan1007 Жыл бұрын
Hi.Can you pls do the KZN prelim acids and Bases for 2022
@MlungisiNkosi
Жыл бұрын
Yikes!!! I saw that one…
@mohamadhussainkhan1007
Жыл бұрын
@@MlungisiNkosiYeah.It was really hard.
@user-hz8bl8po2h11 ай бұрын
Sir from your 7.2.2 question you used two methods but your final answers are not the same. the other one is 0.0025 and another one is 0.025.
Пікірлер: 10
Sir if this was a neutralization how is it possible that NaOH still had moles left
@MlungisiNkosi
10 ай бұрын
Great question… So you’ll see that it isn’t titration where the acid and base completely neutralise each other. In this case the base partially neutralised…
@_https.Plisto
10 ай бұрын
Ohh okay cool
When solving this question of calculating concentration of hydroxide ions i though of ionization of water Kw however i was kinda stuck cause i wasn't told that this is happening at a temperature of 25 degrees. Should we assume?
@MlungisiNkosi
Жыл бұрын
When in doubt, it’s safe to assume otherwise we reach a stalemate. However I do admit that examiners must not leave out such crucial details
Hi.Can you pls do the KZN prelim acids and Bases for 2022
@MlungisiNkosi
Жыл бұрын
Yikes!!! I saw that one…
@mohamadhussainkhan1007
Жыл бұрын
@@MlungisiNkosiYeah.It was really hard.
Sir from your 7.2.2 question you used two methods but your final answers are not the same. the other one is 0.0025 and another one is 0.025.
@MlungisiNkosi
11 ай бұрын
I made a mistake