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3196

Cu2S(g) + O2(g) → 2Cu + SO2(g)
What is the change in the oxidation number of copper in the reaction?

  • A. 0 to + 2
  • B. 0 to + 1
  • C. + 1 to 0
  • D. + 2 to + 1
View Answer & Discuss (4) JAMB 2017
3197

In the diagram above. X is

  • A. SO3
  • B. SO2
  • C. S
  • D. H2S
View Answer & Discuss (2) JAMB 2017
3198

The diagram above. Y is

  • A. fused CaO
  • B. H2O
  • C. NaOH
  • D. Concentrated H2SO4
View Answer & Discuss (3) JAMB 2017
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3199
Calculate the mass of copper deposited when a current of 0.5 ampere was passed through a solution of copper(II) chloride for 45 minutes in an electrolytic cell. [Cu = 64, F = 96500Cmol-1]
  • A. 0.300g
  • B. 0.250g
  • C. 0.2242g
  • D. 0.448g
View Answer & Discuss JAMB 2017
3200


The IUPAC nomenclature of the structure above is

  • A. 3-methybut-3-ene
  • B. 2-methylbut-1-ene
  • C. 2-ethylprop-1-ene
  • D. 2-methylbut-2-ene
View Answer & Discuss (10) JAMB 2017
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