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1. | (i) Write the equation for the laboratory preparation of the sulphur dioxide from sodium sulphite. | | | | |
2. | (ii) How is the sulphur dioxide collected? | | | | |
3. | (iii) What does the method of collection tell you about the density of sulphur dioxide? | | | | |
4. | (iv) What do you see when sulphur dioxide is bubbled through an acidified potassium dichromate solution? | | | | |
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