What is the Relationship Between Specific Gravity and Dilution?

In summary, the conversation is about dilution and how to proceed with it. The speaker is seeking help from someone named Fox. They discuss turning the problem into a simple math equation and using mass fractions. The speaker expresses confusion and needs more time to think about the solution.
  • #1
serendipityfox
17
7
Homework Statement
how many grams of water to dilute 200ml noah (SG 1.32, 28.83%) to solution SG 1.157, 13.55%
Relevant Equations
sg= density x / density h20
i am nonplussed about how to proceed with this dilution, probably it is very simple.
 
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  • #2
Hellp fox, :welcome: !

Work out your homework equation to turn this into a simple math problem and you'll be fine.
To do this, write a scenario, something like
200 ml NaOH of SG 1.32 weighs .. grams and consists of ... gram of H2O plus ... grams of NaOH
etc.
Then convert that into an expression in terms of symbols (not numbers) for the amount of water you need to add.
 
  • #3
ok! thanks
 
  • #4
Here you are dealing with mass fractions, not molalities and certainly not molarities !
 
  • #5
i must think about this a little more...
 

1. What is specific gravity dilution?

Specific gravity dilution is the process of reducing the concentration of a substance in a solution by adding more of the solvent. This results in a decrease in the specific gravity or density of the solution.

2. Why is specific gravity dilution important in scientific experiments?

Specific gravity dilution is important in scientific experiments because it allows for precise control over the concentration of a substance in a solution. This is necessary for accurate and reproducible results in experiments that require specific concentrations.

3. How is specific gravity dilution calculated?

Specific gravity dilution is calculated by dividing the initial specific gravity of the solution by the final specific gravity after dilution. The resulting value is the dilution factor, which can then be used to determine the concentration of the diluted solution.

4. What are some common methods of specific gravity dilution?

Some common methods of specific gravity dilution include serial dilution, where a series of dilutions are made using the same dilution factor, and volumetric dilution, where a specific volume of the initial solution is added to a larger volume of solvent.

5. Can specific gravity dilution affect the properties of a substance?

Yes, specific gravity dilution can affect the properties of a substance. As the concentration of a substance decreases, its physical and chemical properties may also change. This is important to consider when designing experiments or conducting analyses that require specific concentrations of a substance.

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