AP BIOLOGY

Detailed explanation-1: -Detailed Solution The correct answer is 2. If the pH of the solution is 13, this means that it is strongly basic. It is a measure of acidity or the basicity of a solution. It is defined as the negative logarithm of the concentration in (mol/L) of hydrogen ions that it contains.

Detailed explanation-2: -Solution with pH=13 is a strong base as the basicity increases from 7 to 14.

Detailed explanation-3: -Compounds with a pKa of more than about 13 are called strong bases. Common examples of strong bases are the hydroxides of alkali metals and alkaline earth metals like NaOH and Ca(OH)2.

Detailed explanation-4: -Sodium Hydroxide (NaOH) has a pH of 13.