Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas chemical Suppose the CO, gas evolved by a certain chemical reaction taking place at water reaction 30.0 °C is collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 137. mL. Sketch of a gas-collection apparatus Calculate the mass of C0, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases.

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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**Text for Educational Website:**

**Gas Collection Over Water Experiment**

Sometimes in the lab, we collect the gas formed by a chemical reaction over water. This technique helps to easily isolate and measure the amount of gas produced.

**Scenario:**

Suppose the CO₂ gas evolved by a certain chemical reaction at 30.0 °C is collected over water using an apparatus like the one shown in the sketch. The final volume of gas in the collection tube is measured to be 137 mL.

**Objective:**

Calculate the mass of CO₂ in the collection tube. Round your answer to two significant digits. You can make any normal and reasonable assumptions about the reaction conditions and the nature of the gases.

**Diagram Explanation:**

The sketch depicts a typical gas-collection apparatus:

- **Chemical Reaction Vessel:** Shows where the chemical reaction occurs, producing CO₂ gas.
- **Collection Tube:** The gas collects over water in an inverted tube.
- **Water:** Serves as a medium over which the gas is collected.
- **Collected Gas:** The gas rises into the tube and its volume is measured.

Feel free to use diagrams like this one to better visualize and understand the process of gas collection over water.
Transcribed Image Text:**Text for Educational Website:** **Gas Collection Over Water Experiment** Sometimes in the lab, we collect the gas formed by a chemical reaction over water. This technique helps to easily isolate and measure the amount of gas produced. **Scenario:** Suppose the CO₂ gas evolved by a certain chemical reaction at 30.0 °C is collected over water using an apparatus like the one shown in the sketch. The final volume of gas in the collection tube is measured to be 137 mL. **Objective:** Calculate the mass of CO₂ in the collection tube. Round your answer to two significant digits. You can make any normal and reasonable assumptions about the reaction conditions and the nature of the gases. **Diagram Explanation:** The sketch depicts a typical gas-collection apparatus: - **Chemical Reaction Vessel:** Shows where the chemical reaction occurs, producing CO₂ gas. - **Collection Tube:** The gas collects over water in an inverted tube. - **Water:** Serves as a medium over which the gas is collected. - **Collected Gas:** The gas rises into the tube and its volume is measured. Feel free to use diagrams like this one to better visualize and understand the process of gas collection over water.
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