Question

Which one of the following has the highest pH?
A. Distilled water
B. $1M{\text{ N}}{{\text{H}}_4}OH$
C. 1M NaOH
D. Water saturated with chlorine

Answer 1

$ph$ is a scale used to specify the acidity or basicity of an aqueous answer. Acidic answers are measured to have decreased pH values than basic or alkaline solutions. The $ph$ scale is logarithmic and inversely suggests the attention of hydrogen ions in the solution.

Complete step-by-step answer: Many of the given answers, $NaOH$ is the strongest base. Distilled water is nearly neutral.NH4OH is a vulnerable base and water saturated with chlorine is acidic. Therefore, $NaOH$ has the highest $ph$.$N{H_4}OH$ is a weak base and water saturated with chlorine is acidic. Therefore, $NaOH$ has the highest $ph$. The $ph$ scale is logarithmic and inversely shows the attention of hydrogen ions within the solution. This is due to the fact the system used to calculate $ph$ approximates the negative of the bottom 10 logarithm of the molar concentration. Of hydrogen ions in the solution. More precisely, $ph$ is the bad of the bottom 10 logarithms of the interest of the Hydronium ion. Signs can be used to measure $ph$, via utilizing the fact that their coloration adjustments withM $ph$.Visible contrast of the coloration of a test answer with a general color chart provides a method to degree $ph$ accurately to the nearest entire quantity. More specific measurements are feasible if the shade is measured spectrophotometrically.

Hence, option C is the correct answer.

Note: We know that, $ph$ denoting 'capacity of hydrogen' or 'electricity of hydrogen' is a scale used to specify the acidity or basicity of an aqueous answer. Acidic solutions (answers with higher concentrations of Hydronium ions) are measured to have decreased $ph$ values than primary or alkaline solutions.