Answer: The volume of ammonia required from first solution to make second solution is 5.72 mL
Step-by-step 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