Caustic Soda Calculations of Molarity

Molecular Formula : NaOH
Molecular Weight : 35.5+16+1.008=52.508=53 (gm/mole) approximately
Nature : Alkaline
Sold In Solid state

For Liquid solution we use its specific amount dissolved in water as per required

For Example,If we want to prepare 1 molar (Molarity) solution of NaOH
First understand what is Molarity
Molarity is moles/dm3
Formula:
Concentration(Amount per decimeter cube)=Molarity*Molecular weight
=1(moles/dm3)*52.508 (gm/moles)
= 52.508 gm/dm3

It means 52.508 gm of solid NaOH in 1000 ml (1 Liter) of distilled water

Now, if you are asked to prepare 100ml,0.5 molar solution from above prepared 1 molar solution then,
Remember,
M1 * V1 = M2 * V2
where,
M1= molarity of required solution = 0.5 molar
V1= volume of required solution =100ml
M2= molarity of given solution =1 molar
V2= volume of given solution =?
(we find the volume of 1 molar solution which we used to prepare 0.5 molar solution)
Now use above Formula,
1 * V1 = 0.5 *100
V1 = 50 ml (of 1 molar solution)
You have to prepare 100ml of 0.5 molar solution thus take 50 ml 1 molar solution and mix it with 50 ml distilled water. This is your 100ml .5 molar Solution.
Note: Don't mix 50ml 1 molar solution with 100ml water its then not 0 .5 molar solution. You could also check it by reverse formula.

Questions:
What is difference between basic and alkaline?
What is Molarity,Molality and Normality?
Calculate the molarity of parent solution if its volume is 30ml used to prepare 300 ml of 0.3 molar solution?