Regarding the heat balance of xylose dissolving in water: how to find the heat of dissolution and specific heat capacity, and how to perform the calculations
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Regarding the heat balance of xylose dissolving in water: how to find the heat of dissolution and specific heat capacity, and how to perform the calculations
The heat of solution and specific heat capacity of xylose can be easily found, right?
I couldn’t find it in any of the manuals; could you tell me where I can find it?
I’m having dinner after work; I’ll check it for you this afternoon. The good news is that I found xylose in the ASPEN database~:lol
Chinese name: Xylose English name: Xylose Other names: Pentose aldehyde sugar Chemical formula: C5H10O5 Molecular weight: 150.13 CAS numbers: 58-86-6; 133-56-2; 141492-19-5; 25990-60-7 EINECS numbers: 200-400-7; 247-395-8 Melting point: 144–145°C Boiling point: 415.5°C at 760 mmHg Water solubility: ~555 g/L Density: 1.508 g/cm3 Appearance: White fine crystals or powder Flash point: 219.2°C Applications: Used to produce xylitol through reduction and hydrogenation; has a wider range of applications Safety instructions: S22; S24/25 Vapor pressure: 1.22E-08 mmHg at 25°C Raw materials used in production: Soda ash, activated carbon, sulfuric acid Products obtained from its processing: Activated carbon (for use in sugar processing), xylitol
These materials are easy to find, but the heat of solution and specific heat capacity are still not available; thanks anyway
It took me half an afternoon to finally obtain the specific heat capacity of xylose from PLUS. I performed the calculations at 20°C and 100 KPA, and the specific heat capacity under constant pressure came out to be 324 KJ/KMOL-K. The dissolution heat isn’t listed in the properties table for pure substances; I’m not sure why – could it be a problem with my settings? If any experts from AEPEN see this, I would be grateful for their guidance~
I think you’d better look up some literature; the specific heat capacity can be found in databases of pure substances, but there’s really no way to obtain the enthalpy of dissolution. You’ll have to search through literature related to xylose. If you’re working on a research project, spend more time searching for relevant literature~
May I ask where you found it? I want to know what the specific heat is for beer with an original gravity of 8
Beer – just thinking about it makes me drunk. . . . The specific heat capacity of this thing can’t be found, right?~