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химия

неорганическая химия

химический элемент

валентность

оксиды

соенинение с кислородом

молекула кислорода

вода

00:00:05

The topic of our lesson is oxygen, a general

00:00:09

characteristic in obtaining

00:00:11

the properties of oxygen,

00:00:15

so oxygen is a chemical element, you already

00:00:20

know that the chemical element of oxygen

00:00:23

is written in a group, the relative

00:00:28

atomic mass of oxygen is 16 and the valency

00:00:32

that oxygen exhibits is 2, this is a

00:00:37

chemical element as a simple substance,

00:00:41

oxygen is not a metal, not a metal, the

00:00:46

oxygen molecule will be consist of

00:00:49

two atoms o2

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relative molecular weight is

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32

00:00:56

clear relatively atomic all 16 then here

00:01:01

we have two atoms in total will give us 32

00:01:05

further physical properties of oxygen the

00:01:10

state of aggregation of oxygen is

00:01:14

extinguished the light of oxygen as a gas colorless

00:01:19

odorless density one point

00:01:24

4 10 grams per liter solubility in water it is

00:01:29

slightly soluble, the boiling point is

00:01:33

minus 183 degrees of projection, but here is

00:01:38

the melting point,

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but we can imagine oxygen in the form of a

00:01:46

solid or convert it into a solid

00:01:49

state, the melting point will be

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1193 degrees 3

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chemical properties of oxygen

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reactions of skeet with oxygen and for oxygen with

00:02:05

simple substances and complex

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substances

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lead the most important compound for the formation of oxides,

00:02:13

that is, the oxide is a

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compound with oxygen, we were reminded, let’s

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see laboratory methods for

00:02:23

obtaining from the people

00:02:26

1 oxygen can be obtained by electrolysis of

00:02:30

water, that is, we put water in some kind of

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reservoir, there is h2o, we let in a

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constant electric current and

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a minus will be released on the electrodes

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us minus here will go to collect and

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release hydrogen molecules here we

00:03:00

will have a plus and sides of the oxygen molecule

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is by electrolysis we can get

00:03:07

oxygen we are interested in this Sochniks in the

00:03:09

old way this is how the

00:03:11

formula will be written an

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oxygen molecule under the influence of an

00:03:17

electric current would receive hydrogen

00:03:21

and oxygen and the equation they will write

00:03:23

Soviet stands

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further oxygen can be obtained can be

00:03:30

obtained by decomposition maxi then the Turks of

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mercury oxide is heated and I am formed

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decomposition occurs on oxygen and

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mercury mercury strokes in the walls the

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test tubes will be released if you were to

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do about the test tubes in the form of such a

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silvery

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coating this is the form of droplets further laboratory

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methods to obtain oxygen we will have

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the following: this oxygen can be obtained by

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the decomposition of permanganate

00:04:05

to here we have the formula of potassium permanganate

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if we again and heat the experiment,

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the test tube is shown, we simply call the

00:04:15

embankment pour, we usually pour

00:04:19

ordinary potassium permanganate from which you have at

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home Dayana, in every house there is a test tube

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poured, we begin to heat and at the same time,

00:04:29

it will stand out that you are through

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a tube, here is a gas outlet

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tube, we will send through it to

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something, that is, a test tube and also send

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oxygen, it will get here in a test tube to

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accumulate there a bullet of the

00:04:46

sides

00:04:50

receiving the sides press in oxygen can

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be obtained by deposition of

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hydrogen peroxide in the presence

00:04:58

manganese oxide,

00:05:02

this is how the experiment is shown, how to assemble the device,

00:05:07

decomposition will occur and the

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reaction formula will be

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written like this, hydrogen peroxide will be written and

00:05:17

water and oxygen will be formed, the next

00:05:24

turn can be obtained by the decomposition of

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floride chlorate by the summer from berthollet

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salt, here we have berthollet salt and we are from

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it we can also get

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from the sides by decomposition the simplest is the most

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acceptable

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and everyone usually has potassium permanganate, all

00:05:50

experiments will be the easiest

00:05:53

to put potassium permanganate on

00:05:56

the curve getting and getting at the same time the sides,

00:06:00

but in industry oxygen is

00:06:04

simply taken out of the air for

00:06:08

this that we have oxygen in the air

00:06:10

that we breathe and it can be

00:06:15

obtained from the air and is received and will be on an

00:06:18

industrial scale this is the most convenient

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the cheapest way to obtain it

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well that’s all the most important thing you need to

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remember the chemical and physical

00:06:32

properties of oxygen

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the formula of the old one what valence it

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exhibits and know that when interacting

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for interaction, oxygen is formed,

00:06:44

oxide oxide is formed, well, what do we have of that

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element, how will it

00:06:53

react with this oxides of metals

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and non-metals, it is 3

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copper oxide or iron oxide and so on,

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hydrogen oxide

00:07:06

is the water that the garbage is used to, really, that’s

00:07:09

all This is where we will end with his

00:07:12

good date, we wish you success

Description:

Общая характеристика, получение и свойства Кислорода. Самое главное о физических и химических свойствах. Получение в лабораторных и промышленных объемах.

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