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2015-10-02T17:40:30+05:30

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Na is basic in nature.
NaCl is neutral. (pH=7)
NaOH is basic(around 11)

HCO₃⁻ ions and CO₃²⁻ ions are from weak acid and Na is a strong base. So the pH of NaHCO₃ and Na₂CO₃ are more than 7.

So NaCl has lowest pH.
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pH of NaOH is 14,bro
depends on concentration of OH- ions...it is not fixed...
ya, generally for 1M
2015-10-02T17:44:07+05:30

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The answer is, (1) 0.1 Molar of NaCl solution.   :).
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