Question

give the expression for the concentration of a solution. how will you prepare 10% solution of glucose by mass in water​

Answer 1

Answer:

Explanation:

The concentration of a solution is a measure of the amount of solute dissolved in a solvent. There are many ways to indicate concentration; molarity, molality, normality, and %(w/v)#. To prepare a 10% glucose solution, mass out 10 g glucose (solute), and add enough water (solvent) to make a 100 mL solution.

Answer 2

Concentration and steps are given below-

Concentration of a solution is defined as mass of solute in grams present in total volume of solution.

Mathematically it is represented as - C = m / v

C represents concentration, m represents mass of solute and V represents volume of solution.

To prepare 10%w/v glucose solution, 10g solute, glucose here, needs to be dissolved in 90ml water.

This is because, total volume has to be 100ml, which will comprise of 10% solute hence 10g glucose. Now, 90ml will make up the volume upto 100ml solution.

Steps -

Measure 90ml water in measuring cylinder.

Weigh 10g glucose on weighing machine.

Add glucose in flask or beaker, then add water gradually by little amounts to completely dissolve the solute.

10% w/v solution is ready.