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sulfur dioxide is a reducing agent !
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Biology; Chemistry; Physics: Post your doubts here!
- Thread starter scouserlfc
- Start date
sulfur dioxide is a reducing agent !
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Don't misguide people dude. SO2 is a reducing agent here, it will reduce potassium dichromate and change its colour to green!
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QUESTION!!!
Samples of SO2 are passed thru acidified potassium dichromate and aq. potassium iodide. which of the following results is obtained?
a) KmNO4 turns green to orange. Aq. KI turns brown to colorless
b) KmNO4 turns orange to green. Aq. KI hv no change in color
c) KmNO4 has no change in color. Aq. KI turns colorless to brown
d) KmNO4 has no change in color. Aq. KI has no change in color
Samples of SO2 are passed thru acidified potassium dichromate and aq. potassium iodide. which of the following results is obtained?
a) KmNO4 turns green to orange. Aq. KI turns brown to colorless
b) KmNO4 turns orange to green. Aq. KI hv no change in color
c) KmNO4 has no change in color. Aq. KI turns colorless to brown
d) KmNO4 has no change in color. Aq. KI has no change in color
So pottassium dichromate is used to test for reducing agents....am I right???
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Ya same prob me too
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correct
Whih past paper ?
So if sulfur dioxide is an oxidising agent as u said...how can the colour changecorrect
Is oxidising agent and oxidant the same??
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will u b plz kind enuf to explain it
- Messages
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yes of course it is
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Answer:
The difference between the oxidizing agent and the reducing agent is that the oxidizing agent is the one that loses the electrons and the reducing agent gains the electrons.
You can remember it easily because it's contradicting, and by the saying OIL RIG:
Oxidized Is Lost Reduced Is Gained.
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will u b plz kind enuf to explain it
KI is a reducing agent . reducing agent + reducing agent no colour change
reducung agent cannot be reduced
n KMnO4 is an oxidising agent !
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One mole of compound X gives three moles of ions in aqueous solution. Sulfuric acidis H2SO4 and one mole of sulfuric acid can give off twoOne mole of compound X gives three moles of ions in aqueous solution. X reacts with ammonium carbonate to give an acidic gas.
What is compound X?
A Calcium Hydroxide
B Ethanoic Acid
C Sodium Hydroxide
D Sulfuric Acid
~~~~~~~~~~~
I know the answer is D. Sulfuric acid. What I would like to know is why.
What is compound X?
A Calcium Hydroxide
B Ethanoic Acid
C Sodium Hydroxide
D Sulfuric Acid
~~~~~~~~~~~
I know the answer is D. Sulfuric acid. What I would like to know is why.
- Messages
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- Messages
- 402
- Reaction score
- 191
- Points
- 43
yes i no that. but isnt't it determined by whether SO2 is oxidant or reductant? wat is it by the way?KI is a reducing agent . reducing agent + reducing agent no colour change
reducung agent cannot be reduced
n KMnO4 is an oxidising agent !
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Clever enough to edit your post
And i guess you pasted the wrong question? It should K2Cr2O7 not KMnO4
If its dichromate then it will be B. SO2 is a reducing agent and it will change the colour of Dichromate to green. KI is a reducing agent itself so no change in colour!
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