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00:00:02

[music]

00:00:14

hello

00:00:15

the topic of the lesson is the reaction of dilute acids with

00:00:19

metals.

00:00:22

Today in the lesson you will learn to name the

00:00:26

areas of application and rules for handling

00:00:29

dilute acids, explore the

00:00:32

reactions of dilute acids with various

00:00:36

metals and carry out in practice a

00:00:39

qualitative reaction to hydrogen a little

00:00:45

history ch3 ch2 pine trees and acid in the

00:00:54

first century BC it was called

00:00:57

wood acid

00:01:01

h2s y 4 sulfuric acid in the tenth century

00:01:07

it was called vitriol and oil and chlorine

00:01:12

hydrochloric acid in the fifteenth century

00:01:17

it was called hydrochloric alcohol all the way inside

00:01:23

nitric acid in the 15th century or the name

00:01:28

si wind water h2 co3

00:01:34

carbonic acid in the 18th century it was called

00:01:40

soda water,

00:01:42

remember with you the classification of acids,

00:01:45

acids according to the presence of an oxygen atom, divided

00:01:49

into oxygen and oxygen-free according to their

00:01:54

basicity, acids are divided into one

00:01:57

basic,

00:01:58

2 basic and 3 basic acids, the

00:02:06

interaction of acid solutions with

00:02:09

metals, Nikolai Nikolaevich Beketov

00:02:14

studied the interaction of metals with

00:02:18

acid solutions

00:02:20

and on the basis of this compiled the

00:02:23

activity series of metals what is the

00:02:28

essence of this series metals

00:02:30

located Libya hydrogen displaces

00:02:35

hydrogen from acid solutions

00:02:42

magnesium plus sulfuric acid the

00:02:48

interaction between magnesium and sulfuric

00:02:51

acid as a result of interaction

00:02:56

one of the products of hydrogen evolution reactions

00:02:59

pay attention to magnesium zinc and

00:03:05

copper

00:03:07

magnesium zinc in the activity series methane

00:03:10

is to the left of

00:03:12

hydrogen when interacting with acids

00:03:16

during the reaction a salt will be formed

00:03:21

and

00:03:22

hydrogen will be copper in the activity series of

00:03:27

metals is to the right of

00:03:29

hydrogen therefore the reaction between

00:03:35

media and solutions of acids does not occur

00:03:40

equation of the verbal equation of the reaction

00:03:43

cent plus hydrochloric acid equals x

00:03:47

catch something plus hydrogen

00:03:53

application acids acids are found in the

00:04:00

human body and people also

00:04:03

use them with food;

00:04:06

acids are contained

00:04:09

in plants; insects have acids, for example

00:04:13

ants have formic acid;

00:04:16

acids are found in animals;

00:04:22

medicine can be obtained from acids; and most

00:04:27

acids can be found in food;

00:04:35

the use of some acids; nitric

00:04:39

acid is widely used used for

00:04:42

the production of fertilizers, dyes, varnishes,

00:04:44

plastics, medicinal

00:04:48

and explosive substances, as well as chemical

00:04:52

fibers,

00:04:53

sulfuric acid, used for the

00:04:57

production of mineral fertilizers,

00:05:00

medicinal substances, used to

00:05:03

extract metals from ores,

00:05:09

filling acid batteries,

00:05:12

orthophosphoric acid, used in

00:05:16

compositions for degreasing metal

00:05:19

surfaces before applying protective

00:05:23

coatings,

00:05:24

used for corrosion protection

00:05:26

pipelines pumping sea

00:05:30

water,

00:05:33

hydrochloric acid is

00:05:34

widely used in the manufacture of

00:05:37

soldering fluid when discussing silver,

00:05:42

adding hydrochloric acid to a concrete

00:05:45

mixture increases its

00:05:48

frost resistance

00:05:50

[music]

00:05:55

deflection

00:05:56

laboratory experience of the interaction of magnesium

00:06:00

with dilute hydrochloric acid

00:06:03

necessary reagents

00:06:05

magnesium copper solution of hydrochloric acid

00:06:09

necessary and chemical glassware and

00:06:11

laboratory equipment

00:06:13

test tubes and a rack for test tubes

00:06:17

interaction of metals with dilute

00:06:19

hydrochloric acid in two test tubes

00:06:22

place magnesium have additives

00:06:25

a few drops of dilute hydrochloric

00:06:29

acid

00:06:31

write down observations in a notebook with the remainder

00:06:34

verbal equation of the reaction based on the

00:06:38

positions of the metals in the series of activities

00:06:41

draw a conclusion about the reaction

00:06:45

between metals and hydrochloric acid let

00:06:49

's get started to perform the experiment

00:06:52

[music]

00:06:57

in front of us are two test tubes in the first

00:07:01

test tubes magnesium in the second test tube thread

00:07:06

in each test tube add a solution of

00:07:12

hydrochloric acid

00:07:19

add a solution of hydrochloric acid in a

00:07:22

test tube with copper the same amount

00:07:29

add to a test tube with magnesium pay

00:07:39

attention to the change in the test tube

00:07:47

in the test tube smagin a violent reaction occurs,

00:07:52

we observe the release of gas without light,

00:07:57

without odor, this is hydrogen gas in a test tube in the

00:08:04

mixture, the reaction does not occur, there are no changes, we will

00:08:13

enter the experimental data in the observation table

00:08:23

in a test tube with magnesium, we

00:08:27

observe a violent release of gas in a

00:08:31

test tube with a mixture of

00:08:33

changes, no verbal equation of

00:08:36

the reaction, we make up for the reaction between

00:08:40

magnesium and hydrochloric acid,

00:08:43

magnesium plus hydrochloric acid equals

00:08:48

magnesium chloride plus hydrogen conclusions

00:08:53

magnesium in the activity series of metals

00:08:56

is to the left of hydrogen

00:09:00

the reaction with dilute hydrochloric acid

00:09:03

and magnesium proceeds with the release of

00:09:08

hydrogen magnesium displaces hydrogen from the

00:09:12

solution and the court copper in the activity series of

00:09:17

metals is to the right of hydrogen copper

00:09:22

does not displace hydrogen from

00:09:25

acid solutions qualitative reaction to hydrogen

00:09:31

necessary reagents magnesium shavings

00:09:35

hydrochloric acid solution

00:09:39

chemical glassware and laboratory

00:09:41

equipment

00:09:42

test tubes stand for test tubes

00:09:45

gas outlet tube rays for the task in the

00:09:50

test tube place

00:09:51

magnesium shavings additives a few drops of

00:09:55

dilute hydrochloric acid close the

00:09:59

test tube with a stopper with a gas outlet

00:10:01

tube and put another test tube on its tip,

00:10:07

check hydrogen for the frequency

00:10:10

that you observe, let's start performing the

00:10:15

experiment

00:10:20

in a test tube with a gas outlet tube,

00:10:24

magnesium shavings,

00:10:28

add a solution of hydrochloric acid,

00:10:54

observe the release of gas, bring a

00:11:08

splinter of the test tube where hydrogen is collected,

00:11:19

enter the experimental data in the table,

00:11:28

observe the rapid release of gas,

00:11:31

combustion of gas with a characteristic sound

00:11:38

verbal equations of the reaction magnesium plus

00:11:43

hydrochloric acid equals magnesium chloride plus

00:11:49

hydrogen conclusions in the reaction of hydrochloric acid

00:11:54

and magnesium hydrogen is released

00:11:57

pure hydrogen burns quietly with a

00:12:02

characteristic sound

00:12:04

[music]

00:12:10

complete the task

00:12:11

we will send the substances on trips we

00:12:16

will distribute these substances among ships calcium and even

00:12:22

twice the base argentum two o

00:12:30

chlorine oxide 27 sodium oxide as much as the base

00:12:38

h 2 so 4 ship with a question

00:12:44

mark as many as three by four ship with a

00:12:49

question mark sodium two o oxide

00:12:56

n 2 to 5 oxide as much as chlorine oxide ship with a

00:13:04

question mark of the company as much as three times

00:13:10

with the basis I will open an unknown ship

00:13:19

this is an acid let's

00:13:24

summarize the lesson today in the lesson you

00:13:28

learned the areas of application and rules for

00:13:32

handling dilute acids,

00:13:36

explored the

00:13:37

reactions of dilute acids with various

00:13:40

metals and carried out in practice a

00:13:43

qualitative reaction for the presence of hydrogen

00:13:51

lesson is over goodbye

00:13:58

[music]

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