Question

a compound X is bitter to taste it is a compound of washing powder and reacts with dilute HCl to produce brisk effervescence due to colourless and odourless gas which turns limewater milky due to formation of Z when excess of Co2 is passed milkiness disappear due to formation of B identify x y z and P write equations involved in the formation of y,z, p​

Answer 1

as X is bitter ,so it is a base

and as it is a product of washing powder, it is washing soda ,i.e, Na2Co3.10H2O

as the produced gas turns limewater milky, it is Co2

when excess Co2 is passed it formes calcium bicarbonate which is soluble and hence white colour disappears

reactions:-

Na2Co3.10H2o+ dil.HCl

---->Na2Co3+2dil.HCl----->2NaCl+Co2+H2o

here first the water of crystallization of washing soda disappears then reaction occurs

now, Co2+Ca(OH)2---->CaCo3+H2o

when excess co2 is passed:-

CaCo3+H2o+Co2-----> Ca(HCo3)2

Answer 2

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