HSC Chemistry 27 October 2023
IQ3: How are chemicals in solutions measured?
Students:
●conduct practical investigations to determine the concentrations of solutions and investigate the different ways in which concentrations are measured (ACSCH046, ACSCH063)
● manipulate variables and solve problems to calculate concentration, mass or volume using:
– 𝑐=𝑛𝑉 (molarity formula) (ACSCH063)
– dilutions (number of moles before dilution = number of moles of sample after dilution)
This gives practice at converting from mass to molarity to ppm.