Dip a piece of chalk into one test tube, pour chalk powder into another. Pour 1.5 ml of hydrochloric acid of the same
| February 26, 2021 | education
Dip a piece of chalk into one test tube, pour chalk powder into another. Pour 1.5 ml of hydrochloric acid of the same concentration into a test tube. Is there a difference in the rate of gas evolution?
The rate of a chemical reaction will increase with an increase in the surface of the reactants. The contact area of the chalk powder is larger than that of the lump. As a result of a chemical reaction, hydrogen is released. Thus, hydrogen bubbles will be released more actively in the case of interaction of the chalk powder with acid.
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