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When chlorine is passed through a sample of water, the pH of the water sample...

Chemistry
WAEC 2018

When chlorine is passed through a sample of water, the pH of the water sample would be

  • A. < 7
  • B. > 7
  • C. = 7
  • D. 0
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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Correct Answer: Option A
Explanation

\(Cl_{2} + H_{2}O \to HCl + HOCl\)

The two compounds in the product end are acidic and hence, their mixture is acidic. Hence, the pH is < 7


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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 May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free