Question

QUESTION TWO (Start on a new page) A group of grade 11 learners conducted an investigation to compare the vapour pressure of hydrides of group IV under the same conditions. The following table shows results that were obtained during the investigation. Hydrides of group IV Relative molecular mass (g.mol) Vapour pressure (kPa) 108,5 SnH. 123 GeH₁ 204,3 77 SiH, 32 312 CH. 16 423 2.1 Define vapour pressure. 2.2 For this investigation carried out, write down the investigative question. 2.3 The atmospheric pressure is 101,3 kPa. What is the phase (solid, liquid, or gas) of the hydrides at room temperature? (1 2.4 Explain the trend in vapour pressure observed for the hydrides in the above table. In your explanation, refer to the MOLECULAR SIZE, INTERMOLECULAR FORCES and ENERGY required. (3 2.5 Explain the trend in vapour pressure observed for the hydrides in the above table. In your explanation, refer to the MOLECULAR SIZE, INTERMOLECULAR FORCES and ENERGY required.​

Answer 1

Explanation:

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