Which of the following is a good scientific method to detect the presence of water in a liquid?
- AUsing litmus paper
- BTaste
- CSmell
- DUsing anhydrous copper sulfate
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| $(a). H_2O + H_2S$ | $(i). (H_3O^{+}, HS^{-})$ |
| $(b). H_2O + N^{3-}$ | $(ii). (NH_3, OH^{-})$ |
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