Chemistry P31

[IGCSE O/L student]

that's correct, you don't have to write acidified and i'm totally sure about it. you got that right don't worry.

i wrote potassium manganate, cut it and then wrote potassium dichromate
i never thought of the word "acidified"
Osmix1995 i told you my brain was abnormal while I was doing the paper.

 

[WhizAly]

Any oxidizing agent!
Acidified potassium manganate (VII)
Acidified potassium dichromate (VI)
Sometimes they need the oxidation state,sometimes they don't!
Since they asked for state symbols in that ionic equations maybe they'll ignore it here !

 

[L-Girl]

Any oxidizing agent!
Acidified potassium manganate (VII)
Acidified potassium dichromate (VI)
Sometimes they need the oxidation state,sometimes they don't!
Since they asked for state symbols in that ionic equations maybe they'll ignore it here !

i wrote potassium chromate (VI)

 

[L-Girl]

i wrote potassium manganate, cut it and then wrote potassium dichromate
i never thought of the word "acidified"
Osmix1995 i told you my brain was abnormal while I was doing the paper.

no need for "acidified" they never say it in the mark scheme

 

[Osmix1995]

i wrote potassium manganate, cut it and then wrote potassium dichromate
i never thought of the word "acidified"
Osmix1995 i told you my brain was abnormal while I was doing the paper.

LOL will at that question my brain shutdown ... i wrote ...... (better not to say xD) ....

 

[IGCSE O/L student]

no need for "acidified" they never say it in the mark scheme

you sure about it?

 

[L-Girl]

you sure about it?

totally

 

[IGCSE O/L student]

LOL will at that question my brain shutdown ... i wrote ...... (better not to say xD) ....

hahahahahahah... that's worse!
what was the reductant? and how do we indicate it?

 

[IGCSE O/L student]

totally

thanks!
ummm... I think my brain woke up for a snack while I was attempting that question.

 

[WhizAly]

you sure about it?

 

[L-Girl]

hahahahahahah... that's worse!
what was the reductant? and how do we indicate it?

which reductant?

 

[IGCSE O/L student]

is the oxidation state a must?

 

[IGCSE O/L student]

which reductant?

or was it the oxidant?
oh, I don't remember!

 

[L-Girl]

is the oxidation state a must?

well you wrote potassium dichromate right?

 

[WhizAly]

is the oxidation state a must?

According to that MS,so maybe :|

 

[IGCSE O/L student]

well you wrote potassium dichromate right?

yes, that's what i wrote

 

[L-Girl]

or was it the oxidant?
oh, I don't remember!

you mean about the vanadium question?

 

[L-Girl]

yes, that's what i wrote

then dicrhromate is equal to chromate (VI) i guess
because (VI) means that the valency electrons are 6, so its valency is 2 and that's why di is in chromate
hope u get it and hope im right

 

[IGCSE O/L student]

According to that MS,so maybe :|

i didn't write the oxidation state!!

 

[IGCSE O/L student]

you mean about the vanadium question?

yeah, that's the question!