Question

How to find molarity?

Answer 1

The properties and behavior of many solutions depend not only on the nature of the solute and solvent but also on the concentration of the solute in the solution. Chemists use many different units when expressing concentration; however, one of the most common units is molarity. Molarity (M) is the concentration of a solution expressed as the number of moles of solute per liter of solution:

Molarity (M)	=	moles solute
		liters solution

For example, a 0.25 M NaOH solution (this is read as 0.25 molar) contains 0.25 moles of sodium hydroxide in every liter of solution. Anytime you see the abbreviation M you should immediately think of it as mol/L.

In order to calculate the molarity of a solution, you need to know the number of moles of solute and the total volume of the solution.

Answer 2

MOLARITY IS DEFINED AS THE NO OF MOLES OF SOLUTE PER LITRE OF SOLUTION

M= NO OF MOLES OF SOLUTE/ VOLUME OF SOLUTION IN LITRE

SO FIRST WE WILL FIND OUT THE NO OF MOLES OF SOLUTE FROM GIVEN MASS OR VOLUME OF SOLUTE

AND THEN WITH KNOWN VOL OF SOLUTION WE FIND MOLARITY

IT IS DENOTED BY M AND ITS UNIT IS MOL/LITRE

IT IS AFFECTED BY CHANGE IN TEMP SINCE IT IS VOLUME DEPENDENT