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Grade: 10
        In the analysis of 0.5 g sample of feldspar, a mixture of chlorides of sodium and potassium is obtained, which weighs 0.1180 g. Subsequent treatment of the mixed chlorides with silver nitrate gives 0.2451 g silver chloride. What is the percentage of sodium oxide and potassium oxide in the sample?
5 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
							Sol. Molarity = (Moles of solute)/(Volume of solution (L)) moles of urea = 120/60 = 2
Weight of solution = weight of solvent  + weight of solute
= 1000 + 120 = 1120g
⇒  Volume = 1120g/(1.15g / mL)  ×  1/(1000mL/L) = 0.974L
⇒ Molarity = 2.000/0.974 = 2.05M

						
5 years ago
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