Submitted by admin on Mon, 04/21/2014 - 22:24
definition:
Having the properties of an acid, or containing acid; having a pH below 7
sentence:
When this compound is dissolved in water, an acidic solution of hydrogen cyanide, also known as prussic acid, is produced.
A method called scrubbing is used to chemically remove the acidic sulfur dioxide by putting it into contact with calcium carbonate.
difficulty:
medium
toefl frequency:
2