Respuesta :
Answer:
Molar concentration of potassium hydroxide = 0.27 mol / liter (Approx)
Explanation:
Given:
Moles of solute = 0.20 mol
Amount of solution = 0.75 liters
Find:
Molar concentration of potassium hydroxide = ?
Computation:
⇒ Molar concentration = Moles of solute / Amount of solution
⇒ Molar concentration of potassium hydroxide = 0.20 mol / 0.75 liters
⇒ Molar concentration of potassium hydroxide = 0.266666667 mol / liter
⇒ Molar concentration of potassium hydroxide = 0.27 mol / liter (Approx)
The concentration of KOH that have 0.2 moles present in 0.75L is 0.26mol/L
To solve this problem, we can use concentration formula or mole concept. I would use the formula because it is the fastest way around this and since this is most likely going to be an MCQ question, you don't need to show your working.
Molar concentration
Data given;
- volume = 0.75L
- number of moles 0.2moles
The formula is given as
[tex]c = \frac{number of moles}{volume}[/tex]
This shows that it basically the ratio between the number of moles to the volume of the substance.
[tex]c = \frac{0.2}{0.75} \\c = 0.27mol/L[/tex]
The molar concentration of KOH is approximately 0.27mol/L
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