The following salts will produce a gas on reacting with hydrochloric acid except
a
CuSO4
b
CaCO3
c
FeS
d
Na2SO3
e
K2CO3
Explanation
Correct Option
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Discussions (3)
obietimc
1 year ago
yes... because copper can't displace hydrogen since it is lower in the activity series
precious_gift
9 years ago
Its CaCo3 that give Co2 when it reacts with HCL
CaCO3 + 2HCL >> CaCl2 + H2O + CO2
While CuSo4 is an anhydrous salt
