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Volumetric Analysis
| Question | Answer |
|---|---|
| What is a solution | homogenous mixture of a solute and solvent |
| what is a solute | the substance that dissolves in a solvent |
| what is a solvent | the substance that dissolves a solute |
| What is a saturated solution | a solution that contains the maximum amount of solute able to be dissolved at a given temperature |
| what is an unsaturated solution | a solution in which more solute can be dissolved in a certain amount of solvent |
| what is a supersaturated solution | a supersaturated solution is a solution that contains more than the maximum amount of solute that can be dissolved at a given temperaature |
| what is a concentrated solution | There is a large amount of solute in certain amount of solvent. |
| What is a dilute solution? | There is a small amount of solute in certain amount of solvent. |
| what is a standard solution | a solution in which its concentration is known accurately |
| What is a primary standard | Primary Standard is a substance that can be obtained in a stable, pure and soluble solid form so that it can be weighed out and dissolved in water to give a solution of accurately known concentration |
| Define titration | It is a laboratory procedure where a measured volume of one solution is added to a known volume of another solution until the reaction is complete |
| what indicator is used in to determine concentration between ethanoic acid in vinegar | Phenolphtalein |
| what are we looking for between ethanoic acid in vinegar | (phenolphthalein changes from pink to colorless as it becomes acidic). |
| what indicator is used in the Standardisation of hydrochloric acid with a standard solution of sodium carbonate | methyl orange |
| In the standardisation experiment what colour change are we looking for | yellow-reddish pink |
| deliver the tcorrect procedure for using a pipette to deliver accurately 25cm3 of base to conical flask | rinse pipette with deionised water and solution,fill substance with pipette filler,fill above mark and let solution run out until bottom of meniscus is on the mark,dont blow out last drop |
| anhydrous meaning | without water |
| what to keep in mind when looking at Concentration e.g 0.1M | its in litres. |
| whats the end point when potassium manganate is added to iron+sulfuric acid | pink-colourless |
| why cant strong oxidising agent not provide acidic conditions | a s.a agent wants electrons,if a redox reaction requires H+ ions to proceed an acid must be present |
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jp123456789