X and Y are acidic solutions. X has a pH of 2 and Y has a pH of 4. Which of the following statements about hydrogen ion concentrations of X and Y is correct?

 1 Y has a hydrogen ion concentration 2 times greater than X. 2 X has a hydrogen ion concentration 100 times greater than Y. 3 X has a hydrogen ion concentration 4 times greater than Y 4 Y has a hydrogen ion concentration 100 times greater than X
Subtopic:  pH calculation |
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From NCERT
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At 4oC , ionic product of water (K$$\omega$$) is 10-16 . At this temperature, a solution has pH = 7.5 . The nature of this solution at 4oC will be

1. Acidic

2. Alkaline

3. Neutral

4. Cannot be predicted

Subtopic:  pH calculation |
66%
From NCERT
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pH of a saturated solution of $\mathrm{Ca}{\left(\mathrm{OH}\right)}_{2}$ is 9. The solubility product $\left({\mathrm{K}}_{\mathrm{sp}}\right)$ of $\mathrm{Ca}{\left(\mathrm{OH}\right)}_{2}$ is:

1. $0.5×{10}^{-10}$

2. $0.5×{10}^{-15}$

3. $0.25×{10}^{-10}$

4. $0.125×{10}^{-15}$

Subtopic:  pH calculation |
66%
From NCERT
NEET - 2019
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NEET 2025 - Target Batch
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To view explanation, please take trial in the course.
NEET 2025 - Target Batch