Name a gas which turns:
Lime water milky and acidified $K_{2} C r_{2} O_{7}$ paper turns green.

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Solution

1. The gas is Sulphur Dioxide, $S O_{2}$ .
2. Sulphur Dioxide, $S O_{2}$ , turns acidified Potassium Dichromate ( $K_{2} C r_{2} O_{7}$ ) solution/paper green from orange.
$K_{2} C r_{2} O_{7} + H_{2} S O_{4} + 3 S O_{2} \to C r_{2} (S O_{4)_{3}} + K_{2} S O_{4} + H_{2} O$
PotassiumDichromate SulphuricAcid SulphurDioxide Chromium(III)Sulphate PotassiumSulphate Water
Sulphur Dioxide gas ( $S O_{2}$ ) turns lime water milky and $K_{2} C r_{2} O_{7}$ acidified paper green.

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Similar questions

K_{2} C r_{2} O_{7}

Name the gas which turns acidified potassium dichromate paper to green.

H_{2} S O_{4}

K_{2} {C r}_{2} O_{7}

S O_{2}

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