Decrease in Density of Water with Increase in Soap Concentration

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The discussion centers on the density of normal water, which is 1 gm/cm³, compared to soap water, which has a density of 0.9 gm/cm³. It is established that adding soap or detergent to water decreases its density. The conversation explores whether increasing soap concentration continuously lowers the density of the mixture or if it stabilizes at 0.9 gm/cm³. Participants note that while the density of mixtures should generally follow a linear trend, variations may occur due to changes in packing efficiency at different concentrations. There is a request for a graph illustrating the relationship between soap concentration and density, but no specific graph is provided. The term "soap water" is also questioned, indicating a need for clarification on its definition.
M.Kalai vanan
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density of normal water -1 gm/cm cube and density of soap water -0.9 gm/cm cube.

We know that the addition of soap or detergent decreases the density of water.
Thus If we keep on increasing the concentration the soap in the water does the density of water decreases gradually or remains constant at 0.9 gm/cm cube.
If available please provide the graph between Increase in concentration of soap and Decrease in density of water
 
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Hi Kalai,

At 0 % soap - density of water
At 100% soap - density of soap

The density of all other mixtures should be linear, although it can be that at some mixtures the overall packing is more or less favorable and the graph is curved in or out.

I do not know of any graph for these specific values.

Have fun!
 
M.Kalai vanan said:
density of soap water -0.9 gm/cm cube.

Define "soap water".
 

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