The pH of magnesium oxide (MgO) in water is not a fixed value, as it can vary depending on the concentration of MgO and the presence of other ions or substances in the solution. However, magnesium oxide is generally considered to be a basic compound, with a pH value greater than 7 when dissolved in water.
Understanding the Reaction of Magnesium Oxide in Water
When magnesium oxide is added to water, it reacts to form magnesium hydroxide (Mg(OH)2), which is a strong base with a pH value of around 10.5. This reaction can be used to raise the pH of acidic waters, as shown in the Surbec product description. The reaction is as follows:
MgO + H2O → Mg(OH)2
The pH of the solution can be further adjusted by adding acids or bases as needed. For example, if the pH is too high, hydrochloric acid (HCl) can be added to lower the pH. If the pH is too low, sodium hydroxide (NaOH) can be added to raise the pH.
Magnesium Oxide and Water Contaminants
When it comes to contaminants or substances present in the water, magnesium oxide can help to neutralize or buffer acids, which can be useful in removing heavy metals from water. Many heavy metals, such as lead and cadmium, are least soluble in water at mildly basic conditions (pH in the range 8-11), so raising the pH can help to precipitate these metals out of solution and make them easier to remove.
However, it’s important to note that adding magnesium oxide to water can also introduce new contaminants, such as magnesium ions, which can have negative effects on water quality. Therefore, it’s important to carefully monitor the water quality and adjust the pH as needed to ensure that it remains safe for consumption or use.
Magnesium Oxide as a Home Remedy
In terms of home remedies, magnesium oxide can be used to treat acid reflux or heartburn by neutralizing stomach acid. However, it’s important to follow the recommended dosage and consult with a healthcare professional before using magnesium oxide for medicinal purposes.
Conclusion
In summary, the pH of magnesium oxide in water is generally basic, with a value greater than 7. When added to water, magnesium oxide reacts to form magnesium hydroxide, which can be used to raise the pH of acidic waters and remove heavy metals. However, it’s important to carefully monitor water quality and adjust the pH as needed to ensure safety. Magnesium oxide can also be used as a home remedy for acid reflux or heartburn, but it’s important to follow recommended dosages and consult with a healthcare professional.
References:
– Surbec. (n.d.). Magnesium Oxide Media. Retrieved from https://www.surbec.com/products/mgo
– Grade-7: Physical and Chemical Changes. (2020, September 10). Reaction of Magnesium Oxide and Water & pH of … – YouTube. Retrieved from https://www.youtube.com/watch?v=e3_Argxivvs
– Wikipedia. (2023, January 12). Magnesium oxide. Retrieved from https://en.wikipedia.org/wiki/Magnesium_oxide