Question

what is the molarity of 20.0 gram of NAOH dissolved in 1.50 litres of solution​

Answer 1

Solution :

⏭ Given:

• mass of NaOH = 20g
• volume of solution = 1.5L

⏭ To Find:

• Molarity of solution

⏭ Formula:

✏ Formula of molarity is given by...

$\bigstar \: \boxed{ \pink{ \tt{Molarity = \dfrac{mass \: of \: solute}{molar \: mass \: of \: solute \times volume \: of \: solution}}}}$

✏ Molar mass of NaOH = 40g/mol

⏭ Calculation:

$\implies \sf \: Molarity = \dfrac{20}{40 \times 1.5} \\ \\ \implies \sf \: Molarity = \frac{10}{2 \times 15} \\ \\ \implies \: \boxed{ \sf{ \red{Molarity = 0.33 \: M}}}$

⏭ Additional information:

• Molarity of solution shows concentration.
• Molarity depends upon temperature.
• Unit of molarity is M(Molar)