Question

How much ml of 12% glucose solution is required to the prepare 100ml 8% glucose solution?

Answer 1

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An experiment required 200.0 mL of a 0.330 M solution of Na 2 CrO 4. A stock solution of Na 2 CrO 4 containing 20.0% solute by mass with a density of 1.19 g/cm.

Answer 2

66.67 ml , 12% glucose solution is required to prepare the solution of 100 ml , 8%.

How much ml of 12% glucose solution is required to prepare 100ml 8% glucose solution.

Concept : the number of moles of solute in a solution will remain constant, If we dilute the solution.

i.e., initial number of moles of solute = final no of moles of solute

⇒ initial volume of solution × initial concentration = final volume of solution × final concentration

⇒ V × 12% = 100ml × 8 %

⇒ V = 800/12 = 66.67 ml

Therefore the volume of 12% glucose solution is 66.67 ml is required to  prepare the solution of 100ml 8% glucose.

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