plz ans soon
Asked by | 9th Nov, 2009, 11:22: AM
Q 1. The gas is basic since bases turn the colour of phenolphthalein solution pink.
Q 2. Because for showing acidic behaviour, a substance needs to dissociate into H3O+ ions or H+ ions which is only possible in queous solutions.
Q 3. Because they are corrosive and burn the skin.
Last line is not clear.
Answered by | 9th Nov, 2009, 02:28: PM
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