Chemistry What is the Relationship Between Specific Gravity and Dilution?

AI Thread Summary
The discussion centers on understanding the relationship between specific gravity and dilution in a chemistry context. Participants suggest approaching the problem by creating a scenario to simplify the math involved, such as calculating the weight of a specific volume of NaOH. Emphasis is placed on using mass fractions rather than molalities or molarities for accurate calculations. The conversation highlights the importance of breaking down the problem into manageable parts to find the required amount of water for dilution. Overall, the thread provides guidance on tackling dilution problems using specific gravity.
serendipityfox
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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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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.
 
ok! thanks
 
Here you are dealing with mass fractions, not molalities and certainly not molarities !
 
i must think about this a little more...
 
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