Your Turn In the lab, you will make parallel dilutions of a stock solution with

Question

Your Turn In the lab, you will make parallel dilutions of a stock solution with a concentration of 0.01 M KMnOs. Water is the solvent for all of these parallel dilutions. Two of the parallel dilutions are described below. Show your calculations and to include the correct units in your answers Calculate the volume of 0.01 M KMnO4 and of water (the solvent) that will you need to make 25 mL of a 2 mM solution. Transfer these two answers to Part II of the Lab Procedures. 1. 2. Calculate the volume of 0.01 M KMn04 and of water that you will need to make 10 mL of a 1.0 mM solution. Transfer these two answers to the last row of the table in Part II of the Lab Procedures.

Explanation / Answer

Here the given solution is 0.01M concentrate, the meaning of molarity is,

Molarity = moles of a solute/volume of solution

1) To make 2mM from need 0.2 0.01M solution add per ml water

and for 25ml water require to add a 5ml 0.01KMnO4 solution to calculate the formula is

RT/G where R=required M concentrate, T=total solution in ml and g is given concentrate of product

2) The same equation calculate for the second problem is 1.0mM is equal to 0.001M so for to male solution need 1ml 0.01M KMnO4 to add 9 ml water to make total 10 ml solution

  

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