Question

calculate molarity of 4g of Naoh in 1 litre water?

Answer 1

$\huge\pink{As-Salamu-alykum}$

__________________

$\huge\red{Given:- }$

Mass of NaOH = 4g

Volume of water = 1litre

Molar mass of NaOH = 23 + 16+1 = 23+17 40g/mol

Moles of NaOH = mass / molar mass


Moles of NaOH = 4/40

Moles of NaOH = 0.1mol

$\huge\green{Required:-}$

Molarity of NaOH

$\huge\orange{Solution:-}$

Molarity of NaOH = moles of solute / volume of solvent

Molarity of NaOH= 0.1/1

$\huge\purple{Molarity of NaOH = 0.1 M}$

_______________

$\huge\blue{INSHALLAH it will help U}$

Answer 2

Answer:

0.1M

Explanation:

n= 4/40

= 0.1

M = 0.1/1

=0.1M