On the pH scale, we can measure pH from 0 (very acidic) to ______ (very alkaline).
14
The correct answer is 14.
For example, a solution with a pH of 3 is ten times more acidic than a solution with a pH of 4, and a hundred times more acidic than a solution with a pH of 5. Another related scale is the pOH scale, which measures the concentration of hydroxide ions ($$\text{OH}^-$$). The relationship between pH and pOH in aqueous solutions at 25°C is given by: $$ \text{pH} + \text{pOH} = 14 $$ Understanding both pH and pOH helps in fully characterizing the acidity or alkalinity of a solution.
Similar Questions
Which amino acid is essential for healthy skin and teeth, as it is a component of tooth enamel, collagen and elastin?
Which compound is used to remove skins from tomatoes, potatoes and other fruits and vegetables for canning and as an ingredient in food preservatives, which helps prevent the growth of mold and bacteria in food?
When fats and oils are oxidised, they become:
Which of the following contains oxalic acid?
How is the molecular weight of a fatty acid determined?
Vinegar can be used as food preservative due to the presence of _________.
What is the result when a metal is attacked by a substance such as acid?
Important Questions from Equilibrium
What is the pH of a solution prepared by dissolving $0.0025$ moles of $HNO_3$ in $250\,mL$ of water?
Which species acts as acid like behaviour in the following reaction?
\(HPO_4^{2-}+NH_4^{1+}\rightarrow H_2PO_4^{1-}+NH_3\)
Aqueous solution of CH 3COONa is:
pH of a neutral solution is ___________.
A stain of curry on a white cloth become reddish brown when soap is used because the soap is:
