Cl2 gas on reaction with hot and concentrated NaOH gives:[0.77 Mark]

Question

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NaCl+NaOCl

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NaCl+NaClO3

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NaOCl+NaClO3

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NaCl+NaClO4

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Solution

The correct option is B NaCl+NaClO3
3Cl2+6NaOH(hot and conc.)→5NaCl+NaClO3+3H2O

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R, S and T, respectively are:

The reactions of Cl2 gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxoacids of chlorine, P.. and Q, respectively. The Cl2 gas reacts with SO2 gas, in presence of charcoal, vĩ đại give a product R reacts with white phosphorus vĩ đại give a compound S. On hydrolysis, S gives an oxoacid of phosphorus.

3. P.. and Q, respectively, are the sodium salts of

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Q. Paragraph 2
The reactions of Cl2 gas with cold-dilute and hot-concentrated NaOH in water give soduum salts fo two different oxoacids of chlorine, P.. and Q, respectively. The Cl2 gas reacts with SO2 gas, in presence of charcoal, vĩ đại give a product R reacts with white phosphorus vĩ đại give a compound S. On hydrolysis, S gives an oxoacid of phosphorus.