Gravimetric Analysis

Qualitative test

Qualitative test is for identification purposes.

Quantitative analysis

Quantitative analysis is so you can measure quantities / volumes / concentrations.

Two parts of quantitive analysis

Gravimetric Analysis uses weights, and Volumetric Analysis uses volumes

A solution

A solution is a completely perfect mixture of a solvent and a solute, that are uniformly mixed together. It is homogenous, and it is evenly distributed.

Concentration of a solution

The concentration of a solution, is the amount of solute dissolved in a given volume of the solvent

A concentrated solution has more solute than solvent.

% percentage of a solute weight per weight (w/w) 

10% w/w AlCl means 10g of NaCl per 100g of solution.

Weight per volume

Weight per volume means 10g of NaCl per 100cm² of water. 

Volume per volume %

Volume per volume % 10% ethanol means 10 cm³ of ethanol dissolved in 100cm³ 

Parts Per Million (PPM)

Parts Per Million (PPM) is per 1 million parts of a mixture there one part is the substance of interest. 
In water, 1 ppm is equivalent to 1 milligram of solute per liter of water (mg/L). 

In air, 1 ppm can represent 1 molecule of gas per 1 million air molecules.