Question

how can we find molarity and also explain it amd give it example?​

Answer 1

Here is the answer

Explanation:

Morality can be a body of standards or principles derived from a code of conduct from a particular philosophy, religion or culture, or it can derive from a standard that a person believes should be universal. Morality may also be specifically synonymous with "goodness" or "rightness".

Answer 2

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Molarity Formula

Definition:

Molarity of a given solution is defined as the total number of moles of solute per litre of solution. The molality of a solution is dependent on the changes in physical properties of the system such as pressure and temperature as unlike mass, the volume of the system changes with the change in physical conditions of the system. Molarity is represented by M, which is termed as molar. One molar is the molarity of a solution where one gram of solute is dissolved in a litre of solution. As we know, in a solution, the solvent and solute blend to form a solution, hence, the total volume of the solution is taken.

Molarity Formula:

The equation for calculating molarity is the ratio of the moles of solute whose molarity is to be calculated and the volume of solvent used to dissolve the given solute.

M=nV

Here,

M is the molality of the solution that is to be calculated

n is the number of moles of the solute

V is the volume of solution given in terms of litres

Solved Examples

Example 1:

A solution is prepared by bubbling 1.56 grams of hydrochloric acid in water. Here, the volume of the solution is 26.8 mL. Calculate the molarity of the solution.

Solution:

The chemical formula of hydrochloric acid = HCl

The chemical formula for Water = H2O

The molecular weight of HCl = 35.5 ×1 + 1×1 = 36.5 moles/gram

The molecular weight of H2O = 1 ×2 + 16 ×1 = 18 moles/gram

Given, mass of hydrochloric acid in the solution = 1.56 g

The number of moles of hydrochloric acid =

nT=massingramsmolecularweight

nT=1.5636.5=4.27×10−2mole

Now, given volume of the solution = 26.8 mL

Expressing the volume in terms of litres,

volume=26.81000=2.68×10−2Litre

Now, we calculate the molarity of the solution using the formula given above.

Molarity=Numberofmolesofelementvolumeofsolutioninlitres

Molality=4.27×10−22.68×10−2=1.59M

The molarity of the solution is 1.59 M.