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Cyrus the great
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I weight 7 gram of starch and added 3 gram of ethylen glycol and mixed it with 220 gram water. What is the final concentraion of my starch?
3.043 wt%.Cyrus the great said:What is the final concentraion of my starch?
Be careful using the word "volume" unless you really mean it. Keeping it on a weight basis is foolproof. Volumes can combine in unknown ways.Cyrus the great said:So for the final volume of the solution we need to sum up everything we added in the solution (starch, ethylen glycol + water). Then divide amount of starch to the total volume (starch+ethylen glycol+water).Am i right? I got confused because It thought presense of ethylen glycol would interfer the concentration of starch and we will not get 3.043 wt %.
Nope; your method of getting wt% is correct.Cyrus the great said:So my question is if adding the ethylen glycol would interfere with the concentration of starch?
Nope; as long as it is all on a weight basis, there is no density effect.Cyrus the great said:Is density of ethylen glycol effect the concentration of starch?
Yes, wt% is 3% "dry basis." My experience in the starch handling industries is that "dry basis" or "dry solids basis" is used to prevent any confusion.Cyrus the great said:So my question is now the concentration wt % of starch is 7.77/230=3.37 % or we should consider 7/230=3 %?
Starch concentration refers to the amount of starch present in a solution or substance, typically expressed as a percentage or in units of mass per volume.
The concentration of starch is usually measured using various laboratory techniques such as spectrophotometry, titration, or gravimetric analysis.
The concentration of starch can be influenced by factors such as the amount of starch present in the original substance, the volume of the solution, and the method used for measuring the concentration.
The concentration of starch is important in various industries such as food production, pharmaceuticals, and research, as it can affect the quality and effectiveness of products and experiments.
The concentration of starch can be adjusted by diluting or concentrating the solution, or by adding more starch or other substances to the solution. The specific method will depend on the desired concentration and the properties of the solution.