NAME: POST LABORATORY QUESTIONS 1. In this experiment, you generated hydrogen gas. Identify two physical properties of nydrogen gas based upon your experimental observations. a) b). 2. List two gases that are generally considered Water Soluble In question #3 be sure to take the water vapour pressure into account for the temperature listed. You will need to consult the CRC, the Merck Index, or your textbook, etc. for a table of water vapour pressures at various temperatures. 3. A student thermally decomposed a 0.150 gram sample of impure potassium chlorate. Manganese dioxide was used as a catalyst in the reaction. The student collected 43.60 mL of oxygen gas over water in a eudiometer. Potassium chloride was the other product of the reaction. The temperature and pressure at collection time were 20.00 OC and 762.10 mm Hg respectively. The water level in the eudiometer was 4.22 cm below the outside water level in the beaker. a) Write a balanced equation for the reaction. b) What is the corrected pressure of the dry oxygen gas? c) What is the volume, in mL, of the dry oxygen gas at STP conditions? 287

NAME: POST LABORATORY QUESTIONS 1. In this experiment, you generated hydrogen gas. Identify two physical properties of nydrogen gas based upon your experimental observations. a) b). 2. List two gases that are generally considered Water Soluble In question #3 be sure to take the water vapour pressure into account for the temperature listed. You will need to consult the CRC, the Merck Index, or your textbook, etc. for a table of water vapour pressures at various temperatures. 3. A student thermally decomposed a 0.150 gram sample of impure potassium chlorate. Manganese dioxide was used as a catalyst in the reaction. The student collected 43.60 mL of oxygen gas over water in a eudiometer. Potassium chloride was the other product of the reaction. The temperature and pressure at collection time were 20.00 OC and 762.10 mm Hg respectively. The water level in the eudiometer was 4.22 cm below the outside water level in the beaker. a) Write a balanced equation for the reaction. b) What is the corrected pressure of the dry oxygen gas? c) What is the volume, in mL, of the dry oxygen gas at STP conditions? 287

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.6QE

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