Question

EXAMPLE 78. (a) A sample of NaOH weighing 0.38 g is dissolved in water and the solution
is made to 50.0 mL in a volumetric flask
. What is the molarity of the resulting solution? (b) How
many moles of NaOH are contained in 27 mL of 0.15 M NaOH solution? (Textbook Q. 1.23)
Sol​

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Question From class 11 Chapter MOLE CONCEPT

(a) Sample of NaOH weighing 0.38 is dissolved in water and the solution is made to 50.0 mL in a volumetric flask. What is the molarity of the resulting solution ? <br> (b) How many moles of NaOH are contained in 27 mL of 0.15 M NaOH solution ?

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Text Solution

Solution :

(a) Molarity of solution (M)

<br>

<br>

<br> (b) Molarity of solution (M)

<br> Volume of solution

<br> Molarity of solution

<br>

<br>

No. of moles of NaOH

mol.

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