How to Calculate Concentrations in Chemistry Solutions

What will be the concentration of a NaBr solution if more water is added?

If I have 240 mL of a 1.7 M NaBr solution, what will the concentration be if I add 760 mL more water to it?

Concentration of NaBr Solution After Adding More Water

If you add 760 mL more water to 240 mL of a 1.7 M NaBr solution, the concentration of the solution will be 0.408 M.

When dealing with dilutions in chemistry solutions, it is important to understand how to calculate the new concentration after adding more solvent. In this case, we have a 1.7 M NaBr solution and we are adding 760 mL of water to it.

To calculate the new concentration, we can use the dilution formula:

M1V1 = M2V2

Where:

• M1 = 1.7 M (starting concentration)
• V1 = 240 mL (initial volume)
• V2 = 240 mL + 760 mL = 1000 mL (final volume)
• M2 = concentration we are solving for

By plugging in the values and solving for M2, we get:

M2 = (1.7 M * 240 mL) / 1000 mL = 0.408 M

Therefore, the concentration of the NaBr solution will be 0.408 M if 760 mL more water is added to the initial 240 mL of 1.7 M solution.