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UI Wash water used 500 ml Ans. 0.4036 g. Og and 0.7000 g KBrOa are added to 250 ml of water. BrOg is collected on a filter and washed with 250 ml of g in an oven, how much does the precipitated AgBrO3 3.

UI Wash water used 500 ml Ans. 0.4036 g. Og and 0.7000 g KBrOa are added to 250 ml of water. BrOg is collected on a filter and washed with 250 ml of g in an oven, how much does the precipitated AgBrO3 3.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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vunt Cl if the losses caused by solubility in the precipitating solution and wash water are taken into account? The conditions of precipitation and washing are: Final volume of precipitating solution Excess 0.1 M AgNO3 present Volume of wash water used 200 ml 1.0 ml 500 ml Ans. 0.4036 g. 11. 0.5000 g AgNO3 and 0.7000 g KBRO, are added to 250 ml of water. The precipitated AgBrO3 is collected on a filter and washed with 250 ml of water. After drying in an oven, how much does the precipitated AgBrOs 1.7 weigh? 12. Find the milligrams of Cl- left in solution if 50 ml 0.1 M AgNO3 is added to 200 ml of solution which contains 0.2500 g NaCl. Ans. 3 x 10-4 mg. 13. 40.00 ml 0.5000 M AgNO, is added to 230 ml of water which contains 1.942 g K,CrO4. What percentage of chromium remains unprecipitated? Ans. 0.2%. 14. M(OH), is a slightly soluble strong base which dissolves to the extent of 10-6 mole per 100 ml. To 200 ml of 0.1 M MSO,, solid NaOH is added. (a) How many grams of NAOH have been added before a precipitate begins to form? (b) What is the pH when 75 per cent of M+2 has precipitated? Ans. (b) 7.60. 15. The solubility of a hydroxide, X(OH)2, is 0.003 g per liter. The molecular weight is 150. (a) Compute the solubility product. (b) At what pH will a precipitate begin to form if an acid solution of 0.01 M X+2 is neutralized? added to 100 ml 0,1 M NH,
Transcribed Image Text:vunt Cl if the losses caused by solubility in the precipitating solution and wash water are taken into account? The conditions of precipitation and washing are: Final volume of precipitating solution Excess 0.1 M AgNO3 present Volume of wash water used 200 ml 1.0 ml 500 ml Ans. 0.4036 g. 11. 0.5000 g AgNO3 and 0.7000 g KBRO, are added to 250 ml of water. The precipitated AgBrO3 is collected on a filter and washed with 250 ml of water. After drying in an oven, how much does the precipitated AgBrOs 1.7 weigh? 12. Find the milligrams of Cl- left in solution if 50 ml 0.1 M AgNO3 is added to 200 ml of solution which contains 0.2500 g NaCl. Ans. 3 x 10-4 mg. 13. 40.00 ml 0.5000 M AgNO, is added to 230 ml of water which contains 1.942 g K,CrO4. What percentage of chromium remains unprecipitated? Ans. 0.2%. 14. M(OH), is a slightly soluble strong base which dissolves to the extent of 10-6 mole per 100 ml. To 200 ml of 0.1 M MSO,, solid NaOH is added. (a) How many grams of NAOH have been added before a precipitate begins to form? (b) What is the pH when 75 per cent of M+2 has precipitated? Ans. (b) 7.60. 15. The solubility of a hydroxide, X(OH)2, is 0.003 g per liter. The molecular weight is 150. (a) Compute the solubility product. (b) At what pH will a precipitate begin to form if an acid solution of 0.01 M X+2 is neutralized? added to 100 ml 0,1 M NH,
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