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Question

Four students a,b,c and d measured pH values of water, lemon juice, and sodium bicarbonate solution. What is the correct decreasing order of the pH values?


A
Water > lemon juice > sodium bicarbonate
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B
Lemon juice > water > sodium bicarbonate
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C
Sodium bicarbonate > water > lemon juice
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D
Water > sodium bicarbonate > lemonjuice
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Solution

The correct option is A Sodium bicarbonate > water > lemon juice
The highest pH values are shown by bases while the acids give low values on pH scale.Sodium bicarbonate is a strong base with pH value greater than 7, water is neutral with pH 7 while acids like lemon juice have pH value less than 7 on a pH scale of 14. So, the decreasing pH order is (sodium bicarbonate > water > lemon juice).

Chemistry

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