60 ml of standard hardness containing 1 mg of pure CaCO3 per ml consumed 22 ml of EDTA. 40 ml of water sample consumed 20 ml of EDTA solution using EBT indicator. 40 ml of water sample after boiling, filtering consumed 15 ml of EDTA. Calculate the temporary and permanent hardness of water sample.
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60 ml of standard hardness containing 1 mg of pure CaCO3 per ml consumed 22 ml of EDTA. 40 ml
of water sample consumed 20 ml of EDTA solution using EBT indicator. 40 ml of water sample after
boiling, filtering consumed 15 ml of EDTA. Calculate the temporary and permanent hardness of
water sample.
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- . 100 ml boiled cooled and filtered water sample takes 9.6 ml of M/50 EDTA in titration. The Permanent hardness of the water sample in terms of ppm of CaCO3 equivalent is10) 1.0 gram of CaCO3 was dissolved in HCl and the solution was made up to 1000 ml with distilled water. 50 ml of the solution required 45 ml of EDTA solution for titration, 50 ml of hard water sample required 28 ml of EDTA and after boiling and filtering required 15 ml of EDTA solution. Calculate Temporary Hardness. A. 288.6 ppmB. 166.6 ppmC. 88.6ppm 11) Calculate the Permanent Hardness for No. 10 A. 111 ppmB. 222 ppmC. 333 ppm 12) Calculate the Total Hardness for No. 10 A. 421.6 ppmB. 621.6 ppmC. 521.6 ppmA 100 ml sample of water require 20 ml of 0.02 N EDTA for titration using EBT as indicator.100 ml of same water sample boiled and precipitate removed by filtration, the filtrate requires 9 ml of 0.02 N EDTA for titration. Calculate the total hardness, permanent hardness and temporary hardness of water sample.
- What is hardness of water? How can it be determined by using EDTA in a laboratory? Inan experiment to determine the hardness, a sample 100 ml of water required 15 ml of N/50EDTA. 100ml. of water after boiling for 15 minutes and making up to 100 ml again withdistilled water, required 8 ml of EDTA for titration. Calculate total, temporary and permanenthardness of water8:A 75mL sample of water is titrated with 0.100M EDTA. exactly 16.9mL of EDTA are required to reach the EBT endpoint. calculate the total hardness in ppm CACO3 a) 2.253 ppm O 0.030 x 10^3 ppm. c) 0.02534 ppm O d) 2.253 x 10^3 ppmCalculate the hardness of water in ppm CaCO3 if 25.00mL of the sample required 15.00mL of a 0.1000M EDTA to reach the endpoint. (MM CaCO3= 100.09g/mol). ** Need asap pls. Thanks.
- A 25.00 mL water sample required 14.00 mL of 0.021M EDTA to reach its endpoint. A blank titration required 2.13 mL. Calculate the hardness of the water sample in ppm CaCO3. Show the math setup.Very pure silver nitrate standard reagent requires standardization with primary standard NaCl or KCl True False A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): Table 1. Standrdization of the EDTA solution mass of CaCO3 used 0.5467 g Initial burette reading 8.25 mL Final burette reading 16.65 mL Volume consumed 8.40 mL Table 2. Determination of Hardness of Water Volume of water sample 25.00 mL Initial burette reading 15.00 mL Final burette reading 24.00 mL Volume consumed 9.00 mL 23,469 ppm 22,456 ppm 21,290 ppm 23,990 ppm10.0 ml sample of Mg2+ and Nat mixture was titrated against 0.02 M EDTA. It is required 20.0 ml of EDTA to reach end point. Then another 10.0 ml of the same sample was passed through cation exchange resin. The collected H* was titrated against 20.0 ml of 0.1 M NaOH using suitable indicator. calculate the concentration of Mg2+ in the sample in ppm. (Mwt Mg = 24.3 g/mol)
- A water sample is approximated to have a total hardness equal to 120.0ppm. How many milliliters of 0.01000N EDTA will be needed to titrate 250.00mL of the said water sample?(MM CaCO3=100.09g/mol). ** Need asap pls. Thanks.A deepwell water sample of 100 mL was titrated with 0.010 M EDTA at pH 10 ( with Mg-EDTA pH 10 buffer reagent) and consumed 31 mL. Calculate the Total Hardness of the water sample as mg CaCO3. Ans in 3 sig figures. no need to write the unit.Concentration sodium thiosulfate solution used: 0.056 mol L-1 ACCURATE TITRATION VOLUME OF SODIUM THIOSULFATE SOLUTION USED Volume titration 1, (mL) Volume titration 2, (mL) Your Group 15.80 15.75 Group 1 16.05 15.70 Group 2 16.30 16.25 ANALYSIS Average volume used, (ml) Standard deviation Number of moles sodium thiosulfate used, (mol) Number of moles calcium iodate in solution, (mol) Volume of calcium iodate used, (mL) Concentration of saturated calcium iodate solution (mol L-¹) Unrounded value 15.9750 0.26220 0.00089400 0.00036700 A Rounded value 15.97 0.262 8.94 x 10-4 10.0 Minimize