Question

38 grams of lithium carbonate is dissolved in 183ml of solution. What is the molarity solution?

Answer 1

Molarity of the solution = 2.81 mol/L

Step-by-step explanation

Given:

Mass of lithium carbonate = 38 grams

Volume of solution = 183 mL

What to find:

Molarity of the solution.

Step-by-step solution:

The molarity of the solution can be calculated using the molarity formula, which is;

`Molarrity=\frac{Mole}{Volume\text{ }in\text{ }L}`

First, you need to convert 38 grams of lithium carbonate to mole using the mole formula.

Molar mass of lithium carbonate = 73.891 g/mol

`Mole=\frac{Mass}{Molar\text{ }mass}=\frac{38\text{ }g}{73.891\text{ }g\text{/}mol}=0.51427102\text{ }mol`

Also, Volume in L = (183/1000) = 0.183 L

Putting the values of mole and volume in L into the molarity formula above, we have;

`Molarity=\frac{0.51427102\text{ }mol}{0.183\text{ }L}=2.81\text{ }mol\text{/}L`

Hence, the molarity of the solution is 2.81 mol/L.