Is gypsum a carbonate?
No. Gypsum is a calcium sulfate dihydrate.
How might a geologist use acid in the field to identify carbonate rocks such as anhydrite and gypsum?
Full question: Ordinary chalkboard chalk is a solid mixture with limestone (calcium carbonate) and gypsum (calcium sulfate) as its principal ingredients. The limestone dissolves in dilute hydrochloric acid, producing calcium chloride, carbon dioxide, and water. 1.) Gypsum does not react with HCl. If a 5.05g piece of chalk that is 72.0% calcium carbonate is dissolved in excess HCl, what mass of carbon dioxide will be produced? 2.) Determine the mass percent of calcium carbonate in…
Errrrr..... and the question is? Carbonic acid is a solution of carbon-dioxide in water. It can dissolve limestone (calcium carbonate), dolomite (magnesium carbonate) and gypsum (calciumm sulphate). +++ This was flagged on "gibberish" grounds. The question is badly worded but but after gently teasing the writer about that, I answered seriously & concisely what I took to be his or her enquiry.