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Asked by  | 9th Nov, 2009, 11:22: AM

Expert Answer:

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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