Calculate Concentrations of Solutions
2 guided lessons · 18 checks · 1. Principles of Chemistry → Chemical Formulae, Equations, Calculations
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Solute, Solvent and Concentration
Dissolving a solid into a liquid makes a solution, and the amount of solute packed into a given volume decides how concentrated it is. Chemists quote that packing as moles or grams per dm3, with moles the more useful of the two.
What you know already
Moles are already second nature: masses to moles with Mr, and the three-step reacting-mass method. This note moves the counting into liquids, where the same mole tally spreads through a measured volume of solution to give concentration.
Key points of understanding
- A solute is the solid that dissolves; a solvent is the liquid it dissolves into; together they form a solution.
- Concentration is the amount of solute present in a specific volume of solvent.
- More solute in the same volume means a greater concentration, sometimes called strength.
- Concentration carries units of g / dm3 or mol / dm3, with moles the more useful measure.
- To convert cm3 to dm3 divide by 1000; to convert dm3 to cm3 multiply by 1000.
- The formula triangle links moles, concentration and volume: cover the one you want.
The concentration-moles formula triangle
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1.Solute, Solvent and Concentration
Dissolving a solid into a liquid makes a solution, and the amount of solute packed into a given volume decides how concentrated it is. Chemists quote that packing as moles or grams per dm3, with moles the more useful of the two.
The concentration-moles formula triangle
Key points
- A solute is the solid that dissolves; a solvent is the liquid it dissolves into; together they form a solution.
- Concentration is the amount of solute present in a specific volume of solvent.
Guided content from the SME authoring corpus — note rn_4tzwS4GZjPybwtkS, pinned at da18433ed9e8 · promoted SyllabAI/syllabai-resources e967e75f1339