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Chemistry 1994 JAMB Past Questions

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16

The solubility, in moles per dm3 of 20.2 g of potassium trioxonitrate (V) dissolve in 100 g of the resulting mixture is?

(K = 39, O = 16, N =14).

  • A. 0.10
  • B. 0.20
  • C. 1.00
  • D. 2.00
View Answer & Discuss (12) JAMB 1994
17
Which of the following atoms represents deuterium?
  • A. No protons = 1, No of neutrons = 0, No of electrons = 0
  • B. No protons = 1, No of neutrons = 0, No of electrons = 1
  • C. No protons = 1, No of neutrons = 1, No of electrons = 1
  • D. No protons = 1, No of neutrons = 2, No of electrons = 1
View Answer & Discuss (5) JAMB 1994
18

A few drops of concentrated HCI are added to about 10cm3 of a solution of pH 3.4. The pH of the resulting mixtures is?

  • A. less than 3.4
  • B. greater than 3.4
  • C. unaltered
  • D. the same as that of pure water
View Answer & Discuss (5) JAMB 1994
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19
Which of the following compounds is a base?
  • A. CO2
  • B. CaO
  • C. H3PO3
  • D. CH3COOCH3
View Answer & Discuss (2) JAMB 1994
20

20 cm\(^3\) of a 2.0 M solution of ethanoic acid was added to excess of 0.05 M sodium hydroxide. The mass of the salt produced is?

(Na = 23, C = 12, O = 16, H = 1)

  • A. 2.50 g
  • B. 2.73 g
  • C. 3.28 g
  • D. 4.54 g
View Answer & Discuss (16) JAMB 1994
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