Question
This adverb describes any compound which has solubility between 10 and 30 grams per liter: that is, more than “slightly soluble.” For 10 points each:
[10h] Name this nine-letter adverb used by chemists to describe the low-but-measurable solubility of salts like calcium carbonate.
ANSWER: sparingly soluble
[10m] According to this effect, a consequence of Le Chatelier’s (“luh SHAT-lee-ay’s”) principle, calcium carbonate can be salted out of potable water by adding sodium carbonate.
ANSWER: common-ion effect
[10e] Salting out calcium carbonate reduces this property of tap water. Water with this property has a high enough concentration of divalent cations that it leaves residue on dishware.
ANSWER: hard water [or water hardness]
<Adam Silverman, Science - Chemistry> ~22657~ <Editor: Alan Smithee>
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