When 0.0075mol of alcohol x are completely burnt in excess oxygen and the gases produced are passed through an excess of limewater (calcium hydroxide solution), 3.0g of calcium carbonate are produced. When X is warmed with acidified potassium dichromate (VI) there is a color change from orange to green. What could be the identity of X?

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cgitau1234321 cgitau1234321

17-06-2022
Chemistry

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When 0.0075mol of alcohol x are completely burnt in excess oxygen and the gases produced are passed through an excess of limewater (calcium hydroxide solution), 3.0g of calcium carbonate are produced. When X is warmed with acidified potassium dichromate (VI) there is a color change from orange to green. What could be the identity of X?

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kumaripoojavt kumaripoojavt · Answer 1 · 2022-06-30T13:17:42+02:00

X could be [tex]CH_3CH(OH)CH_2CH_3[/tex] when X is warmed with acidified potassium dichromate (VI) there is a colour change from orange to green.

What is alcohol?

Alcohol is formed when yeast ferments (breaks down without oxygen) the sugars in different food.

Aldehydes reduce dichromate from the +6 to the +3 oxidation state, changing colour from orange to green. This colour change arises because the aldehyde can be oxidized to carboxylic acid.

Hence, X could be [tex]CH_3CH(OH)CH_2CH_3[/tex] when X is warmed with acidified potassium dichromate (VI) there is a colour change from orange to green.

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