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Addition of dilute hydrochloride acid to an aqueous solution of a crystalline salt yield a...

Chemistry
JAMB 1985
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?
  • A. Na2SO4
  • B. Na2S
  • C. Na2S2O3.5H2O
  • D. Na2CO3
  • E. NaHCO3
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Correct Answer: Option C
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts