The term "litmus test" is commonly used to mean a totally definitive test. In chemistry litmus is used as an acid-base indicator. Which of the following properly relates the chemical and common usages of the term "litmus test?"
A) Common usage is correct because the litmus test definitively defines a substance as an acid or a base.
B) Common usage is correct because litmus dye changes color at pH = 7.
C) Common usage is incorrect because litmus dye changes color over a range, most of which is above pH = 7.
D) Common usage is incorrect because litmus dye changes color over a range, most of which is below pH = 7.
D
You might also like to view...
The unit of electric charge, the coulomb, is the charge on
A) one electron. B) a specific large number of electrons.
During the winter in the Northern Hemisphere, the "land of the midnight sun" would be found:a
at high latitudes. b. at middle latitudes. c. near the equator. d. in the desert southwest. e. on the West Coast.
What is meant by a mineral's tenacity? List three terms that describe tenacity
What will be an ideal response?
Between 1850 and the present time, the global urban revolution resulted in urban population increasing from
a. 2% to 50% b. 7% to 62% c. 14% to 43% d. 15% to 92% e. 25% to 95%