Question

In: Chemistry

Important equations for making up solutions Weight of solute (g) = formula weight of solute (g/mole)...

Important equations for making up solutions

Weight of solute (g) = formula weight of solute (g/mole) x molarity (mol/l) x final volume (L)

C1V1 = C2V2

How to make solutions

Choose the correct formula from above. Please show all the steps and be sure to clearly show what values are being using relating to the formula.

  1. Calculate the amount of 0.01M KMnO4 solution and the amount of dH2O needed to make 10 ml each of the following solutions:

Parallel Dilution Technique

Concentration of KMnO4

Volume of 0.01M KMnO4 Solution needed

Volume of dH2O needed

1

1.0 mM KMnO4

2

0.6 mM KMnO4

3

0.4 mM KMnO4

4

0.2 mM KMnO4

5

100 µM KMnO4

6

40 µM KMnO4

7

20 µM KMnO4

Solutions

Expert Solution

Correct formula is C1V1=C2V2

  • C1 = Initial concentration of solution
  • V1 = Initial volume of solution
  • C2 = Final concentration of solution
  • V2 = Final volume of solution

once we know the initial volume v1 , we need to dilute the solution with dH2O till 10mL as explained below to get desired volume and desired concentration

queen_honey_blossom answered 1 year ago
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