Question

A pharmacist works with a 1.75 M solution of sodium bromide (NaBr) and water. The volume of the solution is 84.0 milliliters. If the pharmacist dilutes the solution to 1.00 M, what is the volume of the new solution?

Answer 1

147

Step-by-step explanation:

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Answer 2

Answer:- 147 mL.

Solution:- It is a dilution problem that could easily be solved using the dilution equation:

`M_1V_1=M_2V_2`

where,
`M_1` and
`M_2` are the molarities of concentrated and diluted solutions and
`V_1` and
`V_2` are their respective volumes. Let's plug in the given values in the equation and solve it for new volume that is
`V_2` .

Let's say the new volume is V. Let's plug in the values:

1.75M(84.0mL) = 1.00M(V)

`V=(1.75M(84.0mL))/(1.00M)`

V = 147 mL

So, the volume of the diluted or new solution is 147 mL.