A sample of NaOH weighing 0.40g is dissolving in water and the solution is made to 50.0cm3 in volumetric flask.What is the molarity of the resulting solution?
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Answer:
0.2
Explanation:
Weight of solute (NaOH) = 0.40
Molar mass of solute (NaOH) = 40g
Now, 1L = 1000cm^3 = 1000ml
50cm^3 = 50ml
Volume of solution = 50 ml
Molarity = Wb x 1000/ Mb x V
0.40 x 1000/ 40 x 50
M = 0.2
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