Question

Calculate the molarity of the solution.

Answer 1

Answer:

The molarity of the solution is 0.05 $\frac{moles}{L}$

Explanation:

Molarity (M) is the number of moles of solute that are dissolved in a given volume.

Molarity is determined by the following expression:

$Molarity (M)=\frac{number of moles of solute}{dissolution volume}$

Molarity is expressed in units $\frac{moles}{liter}$.

Then you should know the amount of moles of HCL. For that you should know that:

The Avogadro Number or Avogadro Constant is called the number of particles that constitute a substance (usually atoms or molecules) and that can be found in the amount of one mole of that substance.  Its value is 6.023 * 10²³ particles per mole. Avogadro's number applies to any substance.

Therefore, applying a rule of three, 6.02*10²² molecules correspond to:

$moles=\frac{6.02*10^{22}*1mole }{6.023*10^{23} }$

moles=0.1 moles of HCl

Applying the definition of molarity:

$M=\frac{0.1 moles}{2 L}$

M= 0.05 $\frac{moles}{L}$

The molarity of the solution is 0.05 $\frac{moles}{L}$

Answer 2

Answer:

ans. is 0.05

Explanation:

molarity=(mole of solute)/(litre of solution)