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32g of anhydrous copper(ii)tetraoxosulphate(vi) dissolved in 1dm\(^3\) of water generated 13.0kj of heat. The heat...

Chemistry
JAMB 2020

32g of anhydrous copper(ii)tetraoxosulphate(vi) dissolved in 1dm\(^3\) of water generated 13.0kj of heat. The heat solution is?

  • A. 26.0kj/mol
  • B. 65.0kj/mol
  • C. 130.0kj/mol
  • D. 260.0kj/mol
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Correct Answer: Option B
Explanation

32g of CUSO\(_4\) liberate 13.0kj of heat

Molar mass of CUSO\(_4\) = 160g

No. of moles of CUSO\(_4\)  = 32g

No. of moles = 32(mass) / 160(molar mass)

= 0.2 moles

i.e 0.2 = 13kj

1 moles = xkj

: 65KJ 

There is an explanation video available below.

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Explanation Video

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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
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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