You wish to prepare 50.00 ml of 0.0350 m nh3 from concentrated ammonia (15.28 m) by serial dilution using a 50 ml volumetric flasks, a 1.00 ml volumetric pipet, and a 10.00 ml graduated pipet. for the first dilution in the series, 1 ml of concentrated ammonia is added to a 50.00 volumetric flask and then filled to the line. the solution is mixed thoroughly, poured into a beaker, and then used to make the second solution in the series. what volume of the first solution should be used to make the second solution, 50.00 ml of 0.0350 m nh3 solution, using the glassware provided?

The volume of ammonia required from first solution to make second solution is 5.72 mL

Explanation:

To calculate the molarity of the diluted solution, we use the equation:

       .......(1)

where,

are the molarity and volume of the concentrated ammonia solution

are the molarity and volume of diluted ammonia solution

We are given:

Putting values in equation 1, we get:

Now, calculating the volume of ammonia diluted from first dilution to make the required ammonia solution by using equation 1:

We are given:

= Molarity of ammonia solution from first dilution = 0.3056 M

= Volume of ammonia solution from first dilution = ?

= Molarity of ammonia to make second solution = 0.0350 M

= Volume of ammonia to make second solution = 50.00 mL

Putting values in equation 1, we get:

Hence, the volume of ammonia required from first solution to make second solution is 5.72 mL

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