A small amount of sodium hydroxide is added to water. When the chemical reaction reaches equilibrium, the pH is 12. Which statement and conclusion about sodium hydroxide is correct?(1 point)
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1. solvent
2. Water molecules will attract each other electrically, but they will not attract oil molecules, causing separation.
3. Yes, it can be extracted through evaporation. It retains its original properties.
4. The water would need to be heated to a higher temperature, which would give molecules and ions more kinetic energy, increasing solubility.
5.oxygen
6. The number of particles of solute in a solution is measured in moles.
7. Both compound types have oppositely charged regions.
8. oppositely charged ends
9. It easily dissociates into ions in solution.
10. 11.0
11. HCl, H2S, PH3
12. Sulfur (S) has a larger atomic size than oxygen (O), so HS– is a more stable, weaker base than OH–.
13. 4
14. The negative log of the concentration of OH– ions is 2. Sodium hydroxide is a strong base.
15. A solution of potassium hydroxide will always have a lesser concentration of solute than a solution of ammonia.
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So What's the answer?
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A small amount of sodium hydroxide is added to water. When the chemical reaction reaches equilibrium, the pH is 12. Which statement and conclusion about sodium hydroxide is correct?(1 point)
The negative log of the concentration of OH– ions is 2. Sodium hydroxide is a strong acid.
The negative log of the concentration of OH, –, ions is 2. Sodium hydroxide is a strong acid.
The negative log of the concentration of OH– ions is 2. Sodium hydroxide is a strong base.
The negative log of the concentration of OH, –, ions is 2. Sodium hydroxide is a strong base.
The negative log of the concentration of OH– ions is 12. Sodium hydroxide is a strong acid.
The negative log of the concentration of OH, –, ions is 12. Sodium hydroxide is a strong acid.
The negative log of the concentration of OH– ions is 12. Sodium hydroxide is a strong base.
To determine the correct statement and conclusion about sodium hydroxide based on a given pH value, we need to understand the behavior of sodium hydroxide in water and its effect on the pH.
Sodium hydroxide (NaOH) is a strong base that dissociates completely in water, yielding hydroxide ions (OH-) and sodium ions (Na+). The hydroxide ions released by NaOH in water react with water molecules, forming hydroxide ions (OH-) and hydronium ions (H3O+). This reaction can be represented as follows:
NaOH + H2O -> Na+ + OH- + H3O+
The OH- ions contribute to the increase in hydroxide concentration and have a significant effect on the pH of the solution.
Given that the pH reaches 12 when sodium hydroxide is added to water, we can conclude that the concentration of OH- ions in the solution is relatively high.
Therefore, the correct statement and conclusion about sodium hydroxide is that it is a strong base that generates a high concentration of hydroxide ions when added to water, resulting in an alkaline solution with a high pH.