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Question

2X+2Y2XOH+H2

S+O2Z

Z+YP

What are X, Y, Z and P?

A
X=Na, Y=H2O, Z=SO2, P=H2SO3
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B
X=K, Y=H2O, Z=SO2, P=H2SO3
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C
X=Na, Y=H2O, Z=SO2, P=H2SO4
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D
X=K, Y=H2O, Z=SO2, P=H2SO4
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Solution

The correct options are
A X=Na, Y=H2O, Z=SO2, P=H2SO3
C X=K, Y=H2O, Z=SO2, P=H2SO3
2Na+2H2O2NaOH+H2
(X) (Y)
(or)
2K+2H2O2KOH+H2
(X) (Y)
(or)
S+O2SO2
(Z)
SO2+H2OH2SO3
(Z) (Y) (P)

Hence, X can be either sodium or potassium. Y is water while Z is SO2 and P is sulphurous acid.

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