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प्रश्न
The concentration of hydroxide ion in a water sample is found to be 2.5 × 10−6 M. Identify the nature of the solution.
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उत्तर
The concentration of OH ion in a water sample is found to be 2.5 × 10−6 M
pOH = – log10 [OH–]
pOH = – log10 [2.5 × 10−6]
= – log10 [2.5] – log10 [10−6]
= – 0.3979 – (– 6)
= – 0.3979 + 6
pOH = 5.6
We know that,
pH + pOH = 14
pH + 5.6 = 14
pH = 14 – 5.6
pH = 8.4
pH = 8.4, shows the nature of the solution is basic.
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संबंधित प्रश्न
What is the pOH if the hydrogen ion concentration in solution is 1 × 10–3 mol dm–3?
Which of the following is INCORRECT statement?
Which of the following when dissolved in water results in neutral solution?
The Ka value for HCN is 10−9. What is the pH of 0.4 M HCN solution?
Assertion (A): Increasing order of acidity of hydrogen halides is \[\ce{HF < HCl < HBr < HI}\]
Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table, \[\ce{H - A}\] bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.
Define pH.
The degree of dissociation of 0.1 M monobasic acid is 0.4%. Its dissociation constant is ______.
Derive a relationship between pH and pOH.
Define pH.
Define pOH.
