An aqueous solution is 0.273m kcl. What is the molar concentration of potassium chloride, kcl? The density of the solution is 1.011 x 1 1000 g/L
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I can help you with your question. To find the molar concentration of potassium chloride (KCl) in the aqueous solution, you need to calculate the number of moles of KCl present in one liter of the solution.
The molar concentration (also known as molarity) is defined as the number of moles of solute divided by the volume of the solution in liters.
Given that the solution is 0.273 m KCl, this means that there are 0.273 moles of KCl dissolved in one liter of the solution.
To calculate the molar concentration, you need to find the number of moles of KCl dissolved in one liter. Since the density of the solution is 1.011 x 1000 g/L, you can use this density to calculate the mass of KCl present in one liter of the solution.
The molecular weight of KCl is approximately 74.55 g/mol. Using this information, you can calculate the mass of KCl present in one liter of the solution:
Mass of KCl = Density of solution x Volume of solution
Mass of KCl = (1.011 x 1000 g/L) x (1 L) = 1011 g
Now that you have the mass of KCl, you can calculate the number of moles using the molecular weight:
Number of moles of KCl = Mass of KCl / Molecular weight of KCl
Number of moles of KCl = 1011 g / 74.55 g/mol = 13.57 mol
Therefore, the molar concentration of KCl in the solution is 13.57 mol/L
To find the molar concentration of a solution, you need to know the amount of solute (in moles) and the volume of the solution (in liters). In this case, you are given the molarity of the solution, which represents the amount of solute (in moles) per liter of solution.
The molarity (M) is defined as moles of solute (mol) divided by liters of solution (L).
Given:
- Molarity of the solution (aqueous solution) = 0.273 M
- Density of the solution = 1.011 g/mL = 1.011 x 1000 g/L
We can calculate the molar concentration (molarity) of KCl using the given information.
First, we need to convert the density from g/mL to g/L:
density = 1.011 x 1000 g/L = 1011 g/L
Next, we need to convert the molarity units from mol/L to mol/g:
molarity = 0.273 mol/L
To find the molar concentration, we need to convert the moles of KCl to grams. The molar mass of KCl is approximately 74.55 g/mol (potassium: 39.10 g/mol + chlorine: 35.45 g/mol).
Using the equation:
molar concentration (M) = moles (mol) / volume (L)
We can rearrange the equation to solve for moles:
moles (mol) = molar concentration (M) x volume (L)
Substituting the given value:
moles (mol) = 0.273 mol/L x 1 L = 0.273 mol
Now, we can calculate the molar concentration (molarity) in terms of grams:
molar concentration (molarity) = 0.273 mol / 1011 g = 0.00027 mol/g
Therefore, the molar concentration of potassium chloride (KCl) in the given aqueous solution is approximately 0.00027 mol/g.