Video Transcript
In which range of values would the
pH of a basic solution be found?
pH is a measure of acidity. Typically, solutions have pH values
between zero and 14. The acidity of a solution increases
as its pH decreases. And a solution’s basicity increases
as its pH increases. We describe any solution whose pH
is greater than the pH of pure water as a basic solution. Pure water at 25 degrees Celsius
has a pH of seven, and we consider this neutral. So, any solution with a pH greater
than seven is basic. The question’s asking us for a
range of values not a single value, so we’re looking for a range that’s open between
two values or closed in reference to one value.
While the pH scale is regularly
only displayed up to pH 14, it doesn’t actually stop there. So the best we can do is say that
the pH of a basic solution is greater than seven.
