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Question

Which solution has the highest pH?

A
0.020 molar KOH
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B
0.020 molar HNO3
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C
0.020 molar C6H12O6
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D
0.020 molar Mg(OH)2
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Solution

The correct option is A 0.020 molar KOH
pH will be high if the solution is a base. From the given options, KOH is the strong base and hence, it will have highest pH.

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