CHEM101 Lecture Notes - Lecture 11: Sodium Acetate, Molality, Intermolecular Force
Document Summary
Homogeneous mixture of 2 or more pure substances. Where solute is dispersed evenly in the solvent. Like dissolves like, nacl in h2o due to polar. Meta stable state, high temperature then lower temperature dissolve, then theoretically exceeded capacity to hold to salt. E. g sodium acetate seeds and crystallisation occurs and energy released as heat. Removed from surface into solution and from solution into surface, hence constant exchange of those in solution and those on the surface, no net change. Rate of dissolving is same as rate of. An alloy of mercury with another metal, forming a solution. Most salts increase in temperature is increase in solubility, but some exceptions. In water a lot less soluble than salts. Mass % of a = (mass of a in solution/total mass of solution ) x 100. Parts per million (ppm) (mass of a in solution/total mass of solution) x 106.
