write equalibrium reaction Activity E. Solubility of Magnesium Hydroxide The act

Question

write equalibrium reaction Activity E. Solubility of Magnesium Hydroxide The active ingredient in milk magnesia, an over-the-counter antacid remedy, is magnesium hydroxide. Magnesium hydroxide forms a suspension in water due to its low solubility--0.000) mL in cold water and 0.004 g/100 ml in hot water Initial Conditions obtain 10 milk of magnesia solution. Add this to a 250-mL beaker. Add approximately 50 mL of distilled water. 5.10 drops of universal indicator to mix the solution. solution. Swirl Procedure color of milk of Observations Explanation magnesia and universal indicator solution Add one drop of 3M HCl with constant stirring Additional drops of 3M HCl are added with constant stirring Additional drops of 3MHC are added with constant stirring Analyze the Results Write equilibrium reactions for Activities A Fill in the explanation for each step of the procedures

Explanation / Answer

Magnesium hydroxide is a strong base with low solubility in water and it contains hydroxide ions (OH-) and magnesium ions (Mg2+), and hydrochloric acid is a strong acid. It reacts with water to form hydronium ions and chloride ions:

HCl + H2O -------- H3O+ + Cl-

When HCl reacts with water, then the hydronium ions react with hydroxide ions to form water:

H3O+ + OH- ------- 2H2O

Thus, the reaction between HCl and Mg(OH)2 is:

2H3O+ + Mg(OH)2 + 2Cl- -------- 4H2O + Mg2+ + 2Cl-

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