Oxygen Production The Russian Space Agency uses potassium superoxide (KO2) for the chemical oxyg

Oxygen Production The Russian Space Agency uses potassium...

Key Concepts

Chemical Oxygen Generators

Devices that produce oxygen through controlled chemical reactions, often used in environments where conventional oxygen supplies are not available. They are essential in applications such as space suits or submarines, where generating breathable oxygen is critical for survival.

Reaction Stoichiometry

The calculation and balancing of the quantities of reactants and products in a chemical reaction. It ensures the conservation of mass and atoms, allowing for the precise determination of the amounts of substances needed to complete a reaction and produce desired outputs, such as oxygen.

Superoxide Chemistry

The study and application of compounds containing the superoxide ion, which is a reactive oxygen species. These compounds, like potassium superoxide, participate in reactions that generate oxygen through interactions with other chemicals, making them valuable in oxygen production systems.

Life Support Systems

Systems designed to maintain a livable environment by providing essential elements such as oxygen, temperature control, and waste removal. Chemical oxygen generators are a key component in life support systems, especially in sealed or extreme environments where regular oxygen supplies cannot be relied upon.

Transcript

00:01 We are given the balanced chemical equation for the reaction between potassium superoxide and water and carbon dioxide to produce potassium hydrogen carbonate or potassium bicarbonate oxygen and oxygen.

00:39 Those are the two products.

00:42 Given the mass of oxygen that is produced, 380 grams of oxygen is produced, we have to calculate all the other masses.

00:59 So the mass of potassium bicarbonate, the mass of carbon dioxide, the mass of water, and the mass of potassium superoxide.

01:12 Therefore, we need to establish one, two, three, and four ratios.

01:21 Okay, so let's start from right to left, okay? so the first ratio would be three moles of oxygen are produced together with four moles of potassium bicarbonate, or potassium hydrogen carbonate.

01:46 So the first ratio is three moles of oxygen are produced together with four moles of potassium bicarbonate.

02:02 Because we are given grams and we need to give the answer in grants, we need to convert this mole ratio into mass ratio.

02:13 We multiply here by the molar mass of oxygen, which is 16 times 232, and then the motor mass of potassium hydrogen carbonate is the mass of potassium.

02:30 The atomic weight of potassium is 39 .10 plus one, the atomic weight of hydrogen, plus 12, the atomic weight of carbon, plus 3 times 16, the atomic weight of oxygen, which is 48.

02:52 And what we have is 100 .1 grams per mole as the molar mass of potassium hydrogen carbonate.

03:08 Therefore, this mass ratio is 3 times 32 is 96, this small cancel grams of oxygen are needed or are produced together with 400 .4 grams of potassium bicarbonate.

03:38 Let's establish first the four ratios, and then we do quickly the calculation out of the 380 grams of oxygen.

03:48 So the second ratio will be three moles of oxygen are produced when four moles of carbon dioxide react.

03:57 So we have three more of oxygen, produce when formal of carbon dioxide react.

04:19 Again we convert this to a mass ratio multiply here by 32.

04:28 We already know what it is, 96, and here we multiply by 12 the optimum weight of carbon plus 16 times 2.

04:42 12 plus 32 is 12 plus 32 is 24 grams per mole and then the mass ratio is 96 grams of oxygen to 176 grams of carbon dioxide.

05:10 The other ratio would be 3 moles of oxygen to 3 most of oxygen to 2 modes of water.

05:29 Again we convert all moles remember are cancel...

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