Answer: Baking soda in water, pH=11
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxide ion concentration.
Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.
\(pH=-\log [H^+]\)
\(pOH=-log{OH^-}\)
\(pH+pOH=14\)
Thus baking soda in water, pH=11 is basic in nature.
