What is the Magnesium Activity in Springs Near Jenner with a pH of 9.5?

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In summary, the conversation discusses the equilibrium activity and concentration of magnesium in a solution with a pH of 9.5. The individual asking for help is unsure how to begin and questions why the homework template is being ignored. They also inquire about the activities of H+ and OH- in the water, and suggest using the solubility product for Mg(OH)2.
  • #1
skyblu280
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Mg 2+ (aq) +2 OH- (aq)= Mg (OH)2 (s)


If I measure pH of springs near Jenner to be pH=9.5, what can you tell about the equilibrium activity (concentration) of magnesium in that solution? You need to calculate the dissociation constant of water.

Not sure how to start this? Any help
 
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  • #2
Why do you ignore homework template? In hope nobody will realize? I should delete your post and send you a warning about ignoring forum rules.

What is activity of H+ in the water?

What is activity of OH- in the water?

Now use solubility product for Mg(OH)2.
 
  • #3
hi,

Sorry, I really thought I put this in the Hw section under the sciences...
 

Related to What is the Magnesium Activity in Springs Near Jenner with a pH of 9.5?

1. What is the activity of Mg in solution?

The activity of Mg in solution refers to the measure of its chemical potential in a solution, which is affected by factors such as concentration, temperature, and pressure. It is a way to quantify the reactivity of Mg in a particular solution.

2. How is the activity of Mg in solution calculated?

The activity of Mg in solution can be calculated using the Nernst equation, which takes into account the concentration of Mg ions, the standard electrode potential, and the temperature of the solution. It can also be determined experimentally through various methods such as potentiometry and spectrophotometry.

3. Why is the activity of Mg in solution important?

The activity of Mg in solution is important because it affects the rate of chemical reactions involving Mg, as well as its solubility and bioavailability in different environments. It is also used to determine the equilibrium and thermodynamic properties of Mg-containing compounds.

4. How does the activity of Mg in solution change in different environments?

The activity of Mg in solution can change in different environments due to variations in concentration, temperature, and pressure. For example, it may increase in a more acidic solution, or decrease in a solution with a higher concentration of other ions that can form complexes with Mg.

5. What factors can affect the activity of Mg in solution?

The activity of Mg in solution can be affected by various factors such as pH, temperature, ionic strength, and the presence of other ions or compounds that can interact with Mg ions. It can also be influenced by the type of solvent and any changes in the redox potential of the solution.

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