A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now.

New answers tagged

1

Lattice energy Now, according to wikipedia, NaCl has a lattice energy of −756 kJ/mol. First, we have to understand the term lattice energy. Here is the textbook explanation (Fleming: Physical Chemistry): The lattice energy is the energy required to separate the ions in an ionic lattice so that they are at infinite distance (but still ions). This would be ...


0

Coagulation of milk is a result of casein micelles clumping together. This is favoured by higher temperatures and also by favour a pH of around 4.6 as this is the isoelectric point. At this isoelectric point, the amino acids within the casein micelle are electrically neutral. This means there is less electrostatic repulsion between the casein micelles, ...


1

Calcium nitrate exists under three forms : 1) $\ce{Ca(NO3)}_2 $ which melts at 361°C; 2) $\ce{Ca(NO3)}_2$$·\ 3 $$\ce{H_2O}$, which is not commercial and melts at 51°C ; 3) $\ce{Ca(NO3)}_2$$·\ 4 $$\ce{H_2O}$ which is commercially available and melts at 43°C. It looses its water at 132°C and is deliquescent. The decahydrate that you mention does not exist.


Top 50 recent answers are included