Question

Which salt has highest $\mathrm{pH}$ in water?

Answer 1

• $\mathrm{pH}$ scale - It is a measure of how acidic or basic water it is (The range is 0 to 14, from 0 to 7 this is acidic water, 7 is neutral, from 7 to 14 this is basic water).
• Since the concentration of hydrogen ions and hydroxide ions in pure water is constant, the substance remains neutral (even if its pH changes).
• The New Neutral Point on the pH Scale at this higher temperature is at 100°C, which has a pH value of 6.14.

• A salt that gives ${\mathrm{OH}}^{-}$ ions on dissociation in water, shows high pH values, and is basic in n nature.
• Also, salts which are the results of a weak acid and a strong base are basic in nature.

Example:

• ${\mathrm{Na}}_2{\mathrm{CO}}_3$ salt has high $\mathrm{pH}$ because it is a combination of a strong base ($\mathrm{NaOH}$) and weak acid (${\mathrm{H}}_2{\mathrm{CO}}_3$).