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Chapter 3: Q79 E (page 172)

D5W is a solution used as intravenous fluid. It is 5.0% by mass solution of dextrose C6H12O6 in water. If the density of D5W is 1.029g/ml. Calculate the molarity of dextrose in the solution.

Short Answer

Expert verified

The Molarity of Dextrose n the solution is 0.286M

Step by step solution

01

Step 1- Calculating moles of dextrose

Moles = Mass/Molecular mass

= 5/180

= 0.02778 moles

02

Step 2- Calculating volume

Given 5 grams of dextrose, it can be assumed that the volume of solution to be 100g

Volume= Mass/density

=100/1.029

=97.181g/ml

=0.097181 g/L

03

Step 3- Calculating molarity

Molarity=Moles of dextrose/volume of solution in litre

= 0.027778/0.0971

= 0.286M

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