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Anonymous users2024-01-241. Soda ash is white powder, and baking soda is white fine crystals;
2. Add acid, and the first thing to bubble is baking soda:
3. When heated, baking soda will bubble, and soda ash will not react.
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Anonymous users2024-01-23Add acid drop by drop, and the first thing that produces bubbles is baking soda.
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Anonymous users2024-01-22Use two small glasses, add a small amount of two samples, and then add the same amount of vinegar, and the baking soda is the fastest to produce bubbles.
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Anonymous users2024-01-21Soda is easily soluble in water.
The main component of baking soda is NaHCO3, and the main component of soda ash is Na2CO3, A Baking soda is unstable, and it is easy to decompose into Na2CO3, CO2 and water when heated, and the quality is reduced, so A is wrong; >>>More
Make the two into an aqueous solution, the concentration is slightly larger, and then drop vinegar into it, and immediately bubbles come out of baking soda (sodium bicarbonate), and the other is soda ash (sodium carbonate).
Salt and vinegar are essential condiments in the kitchen. >>>More
Question C analysis: sodium carbonate does not decompose when heated, sodium bicarbonate decomposes when heated to produce sodium carbonate, carbon dioxide and water, and there are still solid residues in the end, A is wrong; The flame color reaction of both substances is yellow, and B is wrong; Equal mass of sodium carbonate and sodium bicarbonate, the amount of sodium bicarbonate substance is large, and the amount of hydrochloric acid to generate carbon dioxide gas sodium bicarbonate is more, C is correct; Sodium carbonate solution, sodium bicarbonate solution and lime water all form calcium carbonate precipitate, D is wrong. >>>More
It should be soda ash, i.e. Na2CO3. Caustic soda is sodium hydroxide, which is highly corrosive. Give it an adoption, thanks.