Chemistry Help Forum Density of sucrose solution
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 Sep 29th 2017, 08:04 AM #1 mottman Junior Member   Join Date: Sep 2017 Location: Tucson Posts: 1 Density of sucrose solution How do I calculate the density (g/ml) of a sucrose solution if the concentration of the sucrose (g/L) in the solution is known? I can solve this problem if I know the concentration of sucrose on a wt/wt basis (g/g). For example, if the density of a sucrose solution is 150 g/kg, in 1 kg of this solution there would 150 g of sugar and 850 g of water. The volume of 150 g of sugar would be 150 g / density of sucrose (1.587 g/ml) = 94.5 ml. The volume of water would be 850 g/ density of water (1 g/ml) = 850 ml. The volume of a 1000 g solution would be 850 ml + 94.5 ml = 944.5 ml. The density of the solution would be 1000 g/ 944.5 ml = 1.059 g/ml which agrees closely with table values. Where I am stuck is calculating how many grams of sucrose would be in 1 kg of solution and having density of sucrose in terms of g/ml since the units do not seem to cancel properly. Thanks. Last edited by mottman; Sep 29th 2017 at 04:24 PM.
 Jan 31st 2018, 05:22 PM #2 dilueur Junior Member   Join Date: Apr 2012 Posts: 7 Hello, It's just impossible by reasoning as you do. We can add the masses but not necessarily the volumes. 1 L of water + 1 L of water = 2 L 1 L of water + 1 L of alcohol = 1.92 L C'est la vie... ! One can, mathematically, approach the density of a solution according to the percentage (w/w) of this solution, but with formulas "as long as the arm" ...

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### add sucrose on tea with total amount of 456 ml. the temperature of the has to be exactly 80 degrees celsius with the water having a density of 0.975 g/ml. how many grams of must the solution have

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