More handpicked essays just for you.
Limewater concentration
Concentration of lime
Calculation for determination of concentration of calcium hydroxide solution in calcium chloride
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Limewater concentration
To Determine the Concentration of Limewater Apparatus: □ 10cm3 volumetric pipette □ marker pen □ teat pipette □ rinse bottle and distilled water □ bench cloth □ 250cm3 beaker □ small funnel □ 100cm3 beakers □ 1dm3 volumetric flask and stopper □ 100cm3 burette with stand Chemicals: □ Standardised 2.00mol dm-3 HCl acid solution. □ Approx. 1g dm-3 Ca(OH)2 in 250cm3 of limewater. □ Methyl orange indicator Balanced equation: Ca(OH)2 + 2HCl à CaCl2 + 2H2O Safety: □ Wear safety goggles and lab coats through out the experiment. □ Tie back long hair □ Wipe any spillages with a bench cloth □ Rinse well with water any skin in contact with undiluted HCl. □ Wash your hands when you have cleared away Method: Diluting: 1.) Rinse the volumetric pipette, flask and stopper, a 100cm3 beaker, funnel and teat pipette with distilled water. 2.) Rinse 100cm3 beaker with HCl and pour into a labelled waste beaker. Pour fresh acid into 100cm3 beaker and label it “undiluted acid”. 3.) Rinse the volumetric pipette with 10cm3 of HCl and discard to waste beaker. 4.) Use pipette to accurately measure 10cm3 of HCl into the 1dm3 volumetric flask. 5.) Add distilled water in a wash bottle to the acid until the level has almost reached the white line, then use a teat pipette to fill it up to the point where the meniscus is just on the line. 6.) Insert stopper and invert flask to ensure complete mixing. 7.) Label the flask “0.02 mol dm-3 HCl”. Standardising: 1.) Rinse burette with distilled water and then with a little of the dilute HCl solution. 2.) Drain burette into your waste beaker and fill it with acid. 3.) Wash pipette with distilled water and with a full 10cm3 of Ca(OH)2 solution. 4.) Discharge into your waste beaker. 5.) Rinse the conical flasks with distilled water and drain them.