A) \[NaOH\]vs \[{{(COOH)}_{2}}\]
B) \[KOH\]vs\[{{H}_{2}}S{{O}_{4}}\]
C) \[{{K}_{2}}C{{O}_{3}}\]vs\[HCl\]
D) none of the above
Correct Answer: D
Solution :
Phenolphthalein indicator is suitable for the titration of strong base vs. strong acid and strong base vs. weak acid. Here,\[NaOH,\text{ }KOH\]are strong bases and\[{{K}_{2}}C{{O}_{3}}\]also give strong base\[(KOH)\]in solution. Hence, phenolphthalien is suitable for each titration.
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