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University of New Zealand.
Examination for Senior Scholarships, 1885.
Chemistry.
Paper a.
Examiner: Prof. W. A. Tilden, D.Sc., F.R.S.
| 1. | How would you prepare pure nitric oxide, and how would you prove by experiment that this compound contains half its volume of nitrogen and that its molecule is NO and not N2O2? |
| 2. | How did Graham obtain the soluble varieties of silicic acid and ferric hydroxide? Give some account of their properties. |
| 3. | How could you obtain phosphoric acid from the following phosphates:—a, bone ash; b, common sodium phosphate; c, aluminium phosphate? |
| 4. | What substances other than ozone have the power of liberating iodine from iodide of potassium, and how are they distinguished from ozone? |
| 5. | A mixture of chloride and bromide of potassium gave with nitrate of silver a precipitate of mixed chloride and bromide which weighed 1·179 gram, and when reduced gave ·720 gram metallic silver. What quautities of KCL and KBr respectively did the mixture contain? |
| 6. | What are the general properties of aldehyds, and in what respects do the aldehyds of the aromatic series, e.g. benzaldehyd, differ from those of the acetic series? |
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