【Daily Question】Chemical Engineering Principles 444: Scale (October 13)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering.\" We hope you will give it your active support! Wishing you a happy Christmas! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying to the post, and the topic will be closed after 1 day ! To encourage everyone’s continued participation this year! Participation earns 3 wealth points, with an additional 4 wealth points for correct answers~~~ True or False: When scale is mixed with hydrochloric acid, the immediate formation of a large number of bubbles indicates the presence of carbonic acid. Yes
Most of the scale is calcium carbonate; when it reacts, calcium chloride and carbon dioxide are produced along with water. The reaction is intense, and carbon dioxide and water combine to form carbonic acid, in very small amounts only
When scale is added to hydrochloric acid, a large number of bubbles are produced immediately, indicating the presence of carbonic acid. Correct