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Chemistry 1998 JAMB Past Questions

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21

2X(g) + Y(g) → Z(g): In the equation above, The rate of formation of Z is found to be independent of the concentration of Y and to quadruple when the concentration of X is doubled. The correct equation for the reaction is?

  • A. R = k (X)(Y)
  • B. R = K (X) ° (Y)
  • C. R = K (X) ° (Y) 2
  • D. R = K (X) 2(Y)°
View Answer & Discuss (7) JAMB 1998
22
A gas that turns a filter paper previously soaked in lead ethanoate solution black is?
  • A. hyrogen chloride
  • B. hydrogen sulphide
  • C. sulphur (IV) oxide
  • D. sulphur (VI) oxide
View Answer & Discuss JAMB 1998
23
3CuO(s) + 2NH3(g) → 3Cu(s) + 3H2O(I) N2(g) (i).

2NH3(g) + 3Cl2(g) → 6HCl(g) + N2(g) (ii).

4NH3(g) + 3O2(g) → 6H2O(I) + 2N2(g) (iii).

The reactions represented by the equations above demonstrate the?
  • A. basic properties of ammonia
  • B. acidic properties of ammonia
  • C. reducing properties of ammonia
  • D. oxidizing properties of ammonia
View Answer & Discuss (5) JAMB 1998
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24
A solution containing chloride ions gives white precipitate with silver trioxonitrate(V) Solution. The precipitate will be insoluble in dilute?
  • A. HNO 3 but soluble in ammonia solution
  • B. HNO3 and ammonia solution
  • C. HCl but soluble in ammonia solution
  • D. HCl and in ammonia solution
View Answer & Discuss JAMB 1998
25

The oxide that remains unchanged when heated in hydrogen is?

  • A. CuO
  • B. Fe2O3
  • C. PbO2
  • D. ZnO
View Answer & Discuss (18) JAMB 1998
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