Physical Methods of Solutions

Physical methods use physical units such as weight, volume, and percentage to express the concentration of a solution, while chemical methods use chemical units such as moles, molecules, and equivalents to express the quantity of solute.

Weight per weight percentage (w/w) is the grams of solute per 100 g of solution. It is calculated by dividing the weight of the solute by the weight of the solution and multiplying by 100.

Volume per volume percentage (V/V) is the milliliters of solute per 100 mL of solution. It is calculated by dividing the volume of the solute by the volume of the solution and multiplying by 100.

<p>Parts per million (ppm) is a unit of concentration that represents one part of a solute per one million parts of the solution, while parts per billion (ppb) is a unit of concentration that represents one part of a solute per one billion parts of the solution.</p> Signup and view all the answers

<p>To calculate the concentration of a substance in a solution using the weight-to-volume percentage (w/v) method, you would divide the weight of the solute by the volume of the solution and multiply by 100.</p> Signup and view all the answers

<p>To prepare a solution of a substance with a concentration of 2000 ppb, you would add 2 mg of the substance to 1000 mL of the solvent.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers