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29 solutions

Collecting Gas Over Water

Q. The following table provides some information on carbon dioxide solubility in water. At 1 atm, how many moles of CO2 are released by raising the temperature of 1 liter of warm water from 20°C to 25°C? Express your answer to four decimal places and include the appropriate units.

Solved • Jan 31, 2020

Collecting Gas Over Water

Q. A sample of gas contains 0.1400 mol of HCl(g) and 7.000x10^-2 mol of Br2(g) and occupies a volume of 13.3 L. The following reaction takes place: 2HCl(g) + Br2(g) → 2HBr(g) + Cl2(g) Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

Solved • Jan 23, 2020

Collecting Gas Over Water

Q. When chromium metal is added to nitric acid, the following reaction takes place Cr (s) + 6 HNO₃ (aq) → Cr(NO₃)₃ (aq) + 3 H₂O (l) + 3 NO₂ (g) Calculate the volume of NO₂ gas collected over water at 40.0 °C when 13.9 g of chromium is added to excess nitric acid if the total pressure is 675 torr. The vapor pressure of water at 40.0 °C is 55.3 torr.

Solved • Jan 18, 2020

Collecting Gas Over Water

Q. A 1.05 g sample of a mixture of NaCl (MW 58.45) and NaNO2 (MW 69.01) is reacted with excess sulfamic acid. The sample is 40.00% by mass NaNO2. Only NO2- reacts according to the equation below. The nitrogen gas that is formed is collected over water at a temperature of 22.0°C and the barometric pressure on the day of the experiment was 750.0 mmHg. The vapor pressure of water at 22.0°C is 19.8 mmHg. What is the volume of nitrogen collected?

Solved • Dec 31, 2019

Collecting Gas Over Water

Q. What is the mass percent of NaHCO3 (MW 84.0) in the antacid?

Solved • Dec 29, 2019

Collecting Gas Over Water

Q. An unknown gas was collected over water. Determine the molar mass of the unknown gas if a 0.316 g sample occupies a volume of 56.5 mL at 30 °C. The barometric pressure is 756.0 mmHg.

Solved • Dec 26, 2019

Collecting Gas Over Water

Q. From Chemistry by OpenStax, Chapter 9, Example 9.16, Check Your Learning: A sample of oxygen collected over water at a temperature of 29.0 degrees celsius and a pressure of 764 torr has a volume of 0.560 L. What volume would the dry oxygen have under the same conditions of temperature and pressure?

Solved • Dec 13, 2019