Question

What is the molarity of 820 ml of kl solution that contains 36.52 g of kl

Answer 1

The formula is molarity (M) = moles / liters

molarity (M) = ?

1/ mass = 36.52 g of KCl (you need to find the mole)

mole = mass / Molar mass

Molar mass of KCl:

K = 39.10 g/mol

Cl = 35.45 g/mol

Add K and Cl together: 39.10 + 35.45 = 74.55 g/mol

mole = 36.52 g of KCl / 74.55 g/mol

mole = 0.489 mol of KCl

2/ Volume = 820 mL ( you need to convert to L)

820 / 1000 = 0.82 L

=> M = mol / L

M = 0.489 mol / 0.82 L

M = 0.59 mol/L

Hope this help!

Answer 2

Answer: 0.27 M

Step-by-step explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

`Molarity=(n* 1000)/(V_s)`

where,

n = moles of solute

To calculate the moles, we use the equation:

`\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=(36.52g)/(166g/mol)=0.22moles`

`V_s` =volume of solution in ml

Molarity =
`(0.22* 1000)/(820ml)=0.27M`

The molarity of the solution is 0.27 M.