Which one f the following has the lowest pH?
Correct answer: C. 1 m CH3COOH
- A. 1 M HF
- B. 1 M HCL
- C. 1 m CH3COOH
- D. 1 M NaOH
Explanation
As we know that lower the pH, stronger the acid and greater the no of hydrogen ions in a solution. The acidity of an acid is measured by the ability to remove hydrogen ion.
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About pH and pOH
pH measures hydrogen ion concentration and pOH measures hydroxide ion concentration on a logarithmic scale. Calculations use pH = minus log of hydrogen ion concentration, pOH = minus log of hydroxide ion concentration and pH plus pOH equals pKw, with separate treatment of strong and weak acids and bases.
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