Calculate the pH of 10-6 M HCl solution. When 10-6 M HC and 10-5 M NaOH solutions are mixed
in equal amounts, what will be the pH of the mixed solution?
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pH of 10⁻⁶ M HCl is 6
pH of the mixed solution is 8.954
Explanation:
We know that
Given concentration of ions in HCl solution
mole/litre
Therefore, the pH of HCl solution
or,
When 10⁻⁶ M HCl is mixed with 10⁻⁵ M NaOH then the reaction is
HCl + NaOH ⇒ NaCl + H₂O
1 mole of HCl reacts with 1 mole of NaOH
Therefore, 10⁻⁶ mole HCl will react with 10⁻⁶ mole NaOH
Remaining moles of NaOH
Therefore concentration of OH⁻ ions
mole/litre
We know that
Therefore, the pH of the solution is
Hope this answer is helpful.
Know More:
Q: Calculate the pH of 1.0 ×10–4 molar solution of HNO3.
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Q: Calculate the pH of 0.001M NaOH.Assuming complete dissociation of base.
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