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The pH value of Milk of Magnesia is approximately

June 1, 2025 by rawan239

The pH value of Milk of Magnesia is approximately

Zero

7

10

14

This question was previously asked in

UPSC NDA-2 – 2021

Download PDF Attempt Online

Milk of Magnesia is a suspension of magnesium hydroxide (Mg(OH)₂). Magnesium hydroxide is a base. Bases have pH values greater than 7. Milk of Magnesia is a mild base commonly used as an antacid and laxative. Its pH value is approximately 10 to 11. Among the given options, 10 is the closest value.

– Milk of Magnesia is magnesium hydroxide, a basic substance.
– Its pH is alkaline, typically in the range of 10-11.

Antacids work by neutralizing excess stomach acid (hydrochloric acid). The reaction between Mg(OH)₂ and HCl is: Mg(OH)₂(s) + 2HCl(aq) → MgCl₂(aq) + 2H₂O(l).

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