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प्रश्न
State as to why a solution of Na2CO3 is alkaline?
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उत्तर
When sodium carbonate is added to water, it hydrolyses to give sodium bicarbonate and sodium hydroxide (a strong base). As a result, the solution becomes alkaline.
\[\ce{Na_2CO_3 + H_2O -> NaHCO_3 + NaOH}\]
संबंधित प्रश्न
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\[\ce{O^{2-}2 + H2O ->}\]
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| Column I | Column II |
| (i) CaCO3 | (a) Dentistry, ornamental work |
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| (iii) CaO | (c) Most negative E value among alkali O metals. |
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| (d) Used in white washing |
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