HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

What is the constant-pressure molar heat capacity of ions in aqueous solutions, and why is it negative for some of them?

2020-01-15View Original

Thread Content

Dear experts in physical chemistry: What is the constant-pressure molar heat capacity of ions in aqueous solutions, and why is it negative for some of them? Does an increase in temperature require the release of heat? It’s incredible; I humbly ask for your guidance!
Reply #22020-02-29
Note the definition of heat capacity: if cp is negative, it indicates that this is an exothermic process
Reply #32020-02-29
Could you send me the material with the photo you took? Or send me the book title; I want to look up some information
Reply #42020-02-29
Does the system release heat as its temperature rises?
Reply #52020-02-29
Does the system release heat as its temperature rises?
Reply #62020-02-29
Does the system release heat as its temperature rises?
Reply #72020-02-29
This post was last edited by GHJDSM on 2020-2-29 21:30
Reply #82020-02-29
Because an aqueous solution system must be electrically neutral; it is impossible for anions to exist on their own without corresponding cations. In other words, the Cp of its corresponding cation is positive. When both are calculated together, the overall Cp becomes positive
Reply #92020-02-29
Does that manual contain data on Zn(NH3)2+, Zn(NH3)2 2+, Zn(NH3)3 2+, Zn(NH3)4 2+, as well as free NH3?

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.