In an industrial process of liquid fertilizer, large amounts of urea and water generate an endothermic reaction that does not allow the urea to dissolve completely
@ Marcelo, urea in general is highly soluble in water. If still, you have a problem then increase the water content or use more vibration.
Like you mentioned dissolving urea is an endothermic reaction. So the temperature will be the limiting factor at the end. So adding smaller amounts each time, and then wait till the temperature has increased again will give you the possibility to dissolve more urea. Problem it that this will take a much longer time.
Of course you could heat up the solution if you don't have the time to wait.
- Urea dissolves in water very easily. It is very easily soluble in water because of the hydrogen bonds, as a result of its formation with water.
Urea dissolves in water under the following conditions:
1079 g / l at 20 ° C
1670 g / l at 40 ° C
2510 g / l at 60 ° C
4000 g / l at 80 ° C
Urea dissolves in other materials under the following conditions:
500 g / l in glycerin
50 g / l in ethanol
4 g / L in acetonitrile
i have to dissolves urea in water, 1079 g/L at 2 ºC.. Someone can help me?
Urea dissolution is an endothermic process. So, on addition to water liquid becomes cold thus halting the dissolution process. To dissolve it completely, vigorous agitation is needed.
Dear, can you explain whether you mean the temperature is 1 ° C or Fahrenheit
Marcelo Domingos Sir, Urea itself a water soluble molecules, however density of water might have some effect at lower temperature below 4 Degree Celsius. I think go for heavy stirrer or vibration for dissolving.
Urea is soluble in water (107.9 g/100 ml at 20 °C) and when dissolved, it is neutral on the pH scale. Urea is soluble in glycerol (500 g/L) and slightly less soluble in ethanol. The first temperature regime from room temperature to 190 °C comprises urea melting and vaporization starting from 133 °C. With increasing temperature, urea decomposes to ammonia and isocyanic acid, the latter leading to biuret, cyanuric acid and ammelide formation
- Badges
- Science topic