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What would be observed from an aqueous mixture of magnesium chloride and sodium hydroxide?

You would observe precipitation of magnesium hydroxide.


What would be observed and why when you mix magnesium chloride and sodium hydroxide?

Magnesium hydroxide, a precipitate, is formed.


Would magnesium oxide make an alkali?

Yes. Magnesium oxide will react with water to form magnesium hydroxide.


If you add water to magnesium oxide what would the pH be?

When water is added to magnesium oxide, magnesium hydroxide is formed. The pH of this solution would be basic, usually around 9-10, due to the presence of hydroxide ions.


Chemical formula for magnesium hydroxide?

Mg(OH)2 because magnesium's valency is 2 and it would need 2 hydroxide ions to share it's electrons


What happens with phenothalein is placed in Magnesium hydroxide?

Phenolphthalein in a solution containing magnesium hydroxide would remain colorless as it does not change color at a basic pH, where magnesium hydroxide is present. Phenolphthalein changes color in acidic solutions, not basic ones.


How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?

To completely precipitate 86.9mg of magnesium from seawater, you would need to add an equal molar amount of sodium hydroxide. The molar mass of magnesium is about 24.3 g/mol, so 86.9mg is equivalent to about 3.57 mmol of magnesium. You would need the same amount of mmol of sodium hydroxide to completely precipitate the magnesium.


What mineral that contains oxygen carbon and metallic element magnesium would be classified as?

If it contain magnesium but no calcium then it would be magnesite.


What mineral that contains carbon oxygen and the metallic element magnesium would be classified as?

If it contain magnesium but no calcium then it would be magnesite.


What is the formula MgOH2?

No such molecule as MgOH2 . I think you mean 'Mg(OH)2' Note the use of brackets. The '2' indicates that there are two hydroxide (OH) anions . Mg ( magnesium metal , and OH2 (an obtuse way of writing the water formula), If water and magnesium came in to contact they would immediately react. So MgOH2 is nonsensical.


Why is magnesium hydroxide used as an antacid instead of sodium hydroxide?

Magnesium hydroxide is favored as an antacid over sodium hydroxide because it has a lower risk of causing systemic alkalosis when used in moderate doses. Additionally, magnesium hydroxide can also act as a laxative, providing additional benefits for individuals with constipation. Sodium hydroxide, on the other hand, is a strong base that can lead to complications if ingested in significant amounts.


What evidence is there to indicate that the Epsom salts and ammonia reacted?

Evidence of the reaction between Epsom salts (magnesium sulfate) and ammonia would include observing the formation of a white precipitate (magnesium hydroxide) and the release of ammonia gas, which has a distinct pungent smell. Additionally, one could measure the change in pH, which would increase as the ammonia reacts with the magnesium sulfate to form magnesium hydroxide.