3. A metal carbonate P' on reacting with an acid gives a gas 'Q', which when
passed through a solution 'R' turns it milky. On the other hand a gas 'S' that is
obtained at anode during electrolysis of brine is passed on dry 'R', it gives a
compound 'T' used for disinfecting drinking water Identify P.Q.R.S.Tand
utite the chemical reaction between 'R' and 'S'.
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Explanation:
P is sodium carbonate (NaCO3)
Q is hydrochloric acid (hcl)
R is lime water (calcium hydroxide) [Ca(OH)2]
S is carbon dioxide gas (CO2)
T is bleaching powder (calcium hypochlorite) [Ca(Clo)3]
reaction between R and S is Ca(OH)2+CO2-------Ca(Clo)3+H2O
hope this helps you
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