Addition of dilute hydrochloride acid to an aqueous solut...
Addition of dilute hydrochloride acid to an aqueous solution of a crystalline salt yield a yellow precipitate and a gas which turned dichromate paper green. The crystalline salt was probably?
Na2SO4
Na2S
Na2S2O3.5H2O
Na2CO3
NaHCO3
Correct answer is C
No explanation has been provided for this answer.
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