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Gases

Joanna van Dyk 7 questions 4.0 (5 ratings)

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Questions in this quiz (7)

1Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is the equation for this reaction?
1. A2H2O2 = O2 +2H2O
2. BH2O2 = 2O + H2
3. C2H2O2 + CO2 = HCO3 + H2 + H2O
2Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is a suitable catalyst for this reaction?
1. AManganese oxide
2. BPhosphorus
3. CSulphur Dioxide
4. DLead Nitrate
3Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is the percentage of oxygen in air at atmospheric pressure
1. A21%
2. B78%
3. C0.04%
4. D1%
4Other elements can combust in oxygen.

Write a balanced equation for the combustion of sulphur.
1. AS + O2 = SO2
2. BS + O2 = SO4
3. CS + O2 = SO + H2O
5SO2 dissolves in rainwater to form an acidic solution.
1. ATrue
2. BFalse
6Write a balanced equation for the combustion of hydrogen:

[blank_start]2[blank_end]H2 + O2 = 2[blank_start]H2O[blank_end]
1. A2
2. BH2O
7Select two uses for carbon dioxide:
1. Afizzy drinks
2. Bfire extinguishers
3. Csterilization
4. Dlaughing gas

Description: Some mixed exam-like Qs
Author: Joanna van Dyk
Language: English
Views: 391
Tags: gcse chemistry igcse chemistry chenistry edexcel gases gcse chemistry matter chemistry gcse
Rating: 4.0 out of 5 · 5 ratings
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