The catalytic decomposition of hydrogen peroxide yields oxygen gas and water, according to the reaction given below. In an experiment, the decomposition of hydrogen peroxide yielded 75.3 mL of gas collected over water at 25°C and 0.976 atm. (Pwater = 0.032 atm at 25°C) 2 H2O2(aq) → 2 H2O(l) + O2(g) What mass of oxygen gas was collected?

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. 2 Suppose the CO₂ gas evolved by a certain chemical reaction taking place at 40.0 °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 51.0 mL. g x10 X 歐 Sketch of a gas-collection apparatus S collected gas Calculate the mass of CO₂ that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about 2 the reaction conditions and the nature of the gases. water chemical reaction

Small amounts of oxygen can be generated by the thermal decomposition of KClO 3; 2 KClO 3(s) ↔ 2 KCl(s) + 3 O 2(g) A sample of KClO 3 was decomposed and oxygen collected over water at 26.00 °C (Vapor pressure = 25.21 torr). How many grams of KClO 3 decomposed if 1.032 L of gas were collected at 693.6 torr?

A 5.65 L vessel contains 22.0 g of PC13 and 3.35 g of O2 at 15.0 °C. The vessel is heated to 215 °C, and the contents react to give POC13. What is the final pressure in the vessel, assuming that the reaction goes to completion and that all reactants and products are in the gas phase? -- ΑΣΦ P= 1.441 ? atm

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You set up a reaction with Gallium metal in excess hydrochloric acid at 28 degrees Celsius. It reacts in the following: 2Ga(s)+6HCl(aq)→2GaCl3(aq)+3H2(g) You collect 157 mLs and 0.951 atm of hydrogen over water. How many moles of Ga reacted? The partial pressure of water at 28 degrees is 0.0372 atm.

A sample of Cl2 with a pressure of 1.84 atm and a volume of 290 mL is allowed to react with excess Br2 at 182 °C. Br2 (g) +Cl2 (g) --> 2BrCl (g) Calculate the pressure of the BrCl produced in the reaction if it is transferred to a 2.16-L flask and cooled to 32 °C