How Much Dissolved Substance Remains After Boiling?

In summary, the conversation discusses a solution with a concentration of 1g/L and how much of the dissolved substance is left after boiling. The solution is calculated using the formula C1V1=C2V2, but it is clarified that the question is not about a new concentration, but rather the change in the amount of dissolved solid.
  • #1
jackscholar
75
0

Homework Statement


A solution 200mL solution has 1g/L of a solid dissolved in it. After boiling, there is only 136mL remaining. How much of the dissolved substance is left?

I figured that if
C1V1=C2V2, then if the concentrations were equal after calculation, i could the concentration after from the concentration before so that
C2=(C1V1)/V2 thus converting the concentration to grams afterwards and subtracted that value from the previous one.
 
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  • #2
IMHO you are misinterpreting the question. You are not asked about a new concentration, but whether amount of dissolve solid changed.

Did it? What was removed from the solution?
 

FAQ: How Much Dissolved Substance Remains After Boiling?

What is the purpose of determining a new concentration?

The purpose of determining a new concentration is to accurately measure the amount or concentration of a substance in a solution. This can be used to determine the purity of a substance, track changes in concentration over time, or calculate the amount of a substance needed for a reaction.

How do you calculate the new concentration?

The new concentration can be calculated by using the equation C1V1 = C2V2, where C1 and V1 are the initial concentration and volume, and C2 and V2 are the desired concentration and volume. This equation is based on the principle of dilution, where the total amount of solute remains constant while the volume increases.

What tools are needed to determine a new concentration?

The tools needed to determine a new concentration include a balance or scale to measure the mass of the solute, a volumetric flask or graduated cylinder to measure the volume of the solution, and a calculator to perform the necessary calculations. Other tools may be required depending on the specific method or technique being used.

What factors can affect the accuracy of determining a new concentration?

There are several factors that can affect the accuracy of determining a new concentration, such as human error in measuring the solute or solution volume, contamination of equipment or solutions, and incomplete mixing of the solution. It is important to carefully follow the correct procedures and use calibrated equipment to minimize these sources of error.

How can you verify the accuracy of the new concentration?

The accuracy of the new concentration can be verified by performing multiple trials and comparing the results, using a known standard or reference solution for comparison, or using analytical techniques such as spectrophotometry or titration to confirm the concentration. It is also important to double-check calculations and ensure all measurements were made accurately.

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