SOS Senior 2 Chemistry and Senior 1 Geography 45

Geography D Chemistry: Anode Electrode Reaction Formula: 2i- -2e- = 2i2 Anode Zone Phenomenon: The solution turns brown.

Cathode electrode reaction formula: 2h+ +2e- = h2 cathode region phenomenon: there is gas formation.

Total electrode reaction formula: 2ki + 2naoh = 2koh + 2h2 + 2i2

After mixing, I2 reacts with NaOH.

Geography chooses D, this undoubtedly pulls.

I've almost forgotten about chemistry.

I'm not sure about this geography, I think D

Not very sure, needs to be verified.

Geography chooses A!! Those raw materials are available everywhere, how can it be possible to choose D? But without technology, who can turn waste into treasure?

Of course, these raw materials do not have high requirements for regionality, but have very high requirements for technology, of course, A

Chemistry. This electrolysis is cooked if you do more, provided that you are familiar with the discharge sequence!

Water is involved in electrolysis during electrolysis, so there must be H+ and OH-, H+ is of course acidic, OH- is naturally related to the alkalinity of the solution So to see whether the electrolytic solution is acidic or alkaline in the end depends on what is electrolyzed According to the discharge order: active metal anode (except Au, PT) > S2->I-> Br->Cl-> OH-> oxynate ions and F-.

The discharge order of i- is earlier than oh-, so the electrolysis is i-, and the anode loses electrons and undergoes oxidation reaction.

Anode reaction: 2i- -2e- =i The remaining OH- is not electrolyzed, and the area around the anode is naturally alkaline, and the phenolphthalein turns red.

At the cathode, according to the firing order of the cations, Ag+>Hg2+>Fe3+>Cu2+>H+>Pb2+>Sn2+>Fe2+>Zn2+>Al3+>Mg2+>Na+>Ca2+>K+

Obviously, the discharge sequence of H+ is earlier than that of K+, so H+ is electrolyzed first, and the cathode gets electrons, and a reduction reaction occurs.

Cathodic reaction: 2h+ +2e-=h2 produces hydrogen, of course, bubbles appear at the cathode

In other words, after electrolysis, K+ and OH- are left, resulting in I2 and H2 (but remember, H2 flies away!). The electrolyte contains K+ OH- (which can also be said to be KOH) and I2, which are mixed and reacted again

Here's a trick, that is, the cathode always gathers cations, and the anode always gathers anions, (nonsense, opposites attract, hehe) As for why there is a reaction sequence, you can understand that the discharge sequence is a leaderboard, and the first ones are energetic and fast, and the inert electrode is a train, and the fast one is of course on first (if it is a lively metal anode, it is a dangerous car, and it will autolyze naturally, no one will get on the car, and it may be on someone else's car when it is lively, That is, if the discharge order of the ions of the metal comes first. That's what refined copper looks like).These are all things that I understand myself.

I hope it helps, don't be wordy

The geographical answer is d

Because the manufacture of ethanol is very simple, a certain technology is sufficient, and the technical content is not very high. (It seems that sake brewing can be made everywhere).It takes a lot of raw materials to make a large amount of ethanol, and the manufacturing cost is low.

As long as there is equipment, it is the same everywhere to make alcohol, the key is the cost! Of course, smart people will think that a place that doesn't have to pay for shipping is a good place

The upstairs forgets that technology refers to high-tech industries, and technology here usually refers to talents

After fighting so much, there is no credit and hard work

Chemistry: Anode electrode reaction formula: 2i- -2e- = 2i2 Anode zone phenomenon: solution turns brown.

Cathode electrode reaction formula: 2h+ +2e- = h2 cathode region phenomenon: there is gas formation.

Total electrode reaction formula: 2ki + 2naoh = 2koh + 2h2 + 2i2

After mixing, I2 reacts with NaOH.

The solar radiation energy concentration area is in the visible light segment, and the ultraviolet light has a short wavelength but a small total energy.

Ultraviolet light does not fall under the range of visible light.

When the six gods circle the earth, the earth rotates once. The time is the same.

The orbit of the six gods is larger than that of the earth at the same latitude (the six of the gods should be the equator). Therefore, the distance traveled by the six gods is longer than the distance traveled by the rotation of the earth. That is, the distance is large.

Linear speed is the distance divided by the time, and the time is the same for different distances. Therefore, the linear velocity is greater than the rotation of the Earth.

The question of angular velocity can be understood in this way.

Comparing the orbits of the equator with the six gods, everyone takes the same distance, if everyone turns the same angular velocity, because the distance of the six is large, the time taken should be longer than the rotation time of the earth. But in fact, the time is the same, the distance of the six is larger than the distance of the earth's rotation, so the angular velocity should be faster to be able to travel more distance than the earth's rotation in the same time.

If you receive more sunlight, it is better to have doors and windows in the cold zone of the north temperate zone facing south, and if you are at the equator, you can do it on both sides.

Because the direct point of the sun only moves at the Tropic of Capricorn, the equator is between the Tropic of Capricorn, and the north temperate and cold zones are north of the Tropic of Capricorn, i.e. the sun is only active to the south of them.

Angular velocity is the angle at which it rotates per hour, and the angular velocity of the earth is 15 degrees per hour.

The northern hemisphere faces south, the southern hemisphere faces north, and the equator is windowed on both sides.

The angular velocity here refers to the amount of angular change per unit time when the object moves in a circular motion around the center point of the earth. For example, if the hour hand moves in a circle around the center of the dial for 12 hours, the angular velocity of the hour hand is 360 degrees for 12 hours.

Angular velocity is not only in circular motion, for example, an airplane in the sky is flying from a distance in a uniform linear motion, and the angular velocity at this time is from small to large, passing over your head, at this time the angular velocity is the largest, and then flying far away. At this time, the angular velocity changes from large to small.

This is related to the magnitude of the local solar altitude angle.

The highest height of the Sun in Lhasa occurs on June 22, when the Sun shines directly on the Tropic of Capricorn, which is 23 degrees 26 minutes in the Northern Hemisphere: h 90 degrees (30 degrees 23 degrees 26 minutes) and 83 degrees 26 minutes.

The minimum occurs on December 22: the Sun shines directly on the Tropic of Capricorn, i.e. 23 degrees 26 minutes in the Southern Hemisphere: h 90 degrees (30 degrees + 23 degrees 26 minutes) 36 degrees 34 minutes.

Subtract the minimum value from the maximum value 83 degrees 26 minutes 36 degrees 34 minutes 46 degrees 52 minutes.

So, it should be the answer.

The subtropical high pressure zone e is an Indian low pressure.

2.The climate in Shanghai is hot and rainy, and Los Angeles is hot and dry (Los Angeles has a Mediterranean climate).

3.London is B-C, Beijing is F-E

1) Subtropical high pressure zone, Iceland low pressure.

2) Hot and rainy, hot and dry.

On the first floor, it is correct to determine whether it is low pressure or high pressure by looking at the vertical movement direction of the air. Combined with latitude and longitude to make a judgment, of course, you must have a certain understanding of the three-circle circulation and the monsoon circulation, in fact, this question is very simple.

c.Upper atmosphere.

I looked it up. If you're using the Renjiao version of the book, page 29 of the first volume you can see in the picture.

If the volume of the container is the same, the amount of gaseous substances in it is small, and the pressure is naturally small, which can be analyzed by the ideal gas equation of state.

The left side of this reaction formula is 3 units of gas, and the right side is 2 units, so the positive reaction is a reaction that reduces the two reductions of gaseous substances, even if the reaction of the system pressure is reduced, according to the principle of Le Chatelier, the balance of the reduced pressure is certain in the direction of the negative reaction, so the starting pressure of container 2 is less than half of that of container 1, the sulfur trioxide generation rate is less than half of that of container 1, the heat of reaction is constant, and the total heat release is less than half.

The amount of gas per unit volume decreases, so the pressure decreases.

The pressure decreases and the equilibrium shifts in the direction of increasing volume, so the conversion rate of SO3 decreases.

Q1: If the amount of reactant is halved, why does the pressure decrease due to other things being equal?

A1: Have you learned the molecular kinetic theory in physics? The pressure of the gas is related to two factors, 1 is the temperature and 2 is the number of gas molecules per unit volume.

Now that the volume remains the same, the amount of reactants is halved, the number of molecules is naturally halved, and the pressure is of course reduced. For example, if a tire is inflated, the more gas is injected, the pressure will naturally increase (provided that the volume change is ignored).

Q2: Is the conversion rate of SO3 reduced? On what basis?

A2: You have done this problem, you should have learned Le Charlette's principle, right? You can think of it this way:

Assuming that the reactant is still 1mol SO2 and the volume is half of the original, should the conversion rate of the reaction be the same as at the beginning when the reaction reaches equilibrium (should it be reduced to half accordingly). Now that the volume is doubled, that is, in the second case mentioned in the title, the volume has become larger, so should the balance be shifted in the direction of expanding the volume? This is the direction of SO3 decomposition.

It's so tiring to type so many words. I hope I've made it clear and you can understand it. ^_

1.Yes, the universe is three-dimensional, the stars we see with the naked eye are basically stars, the sun is also a star, stars can shine on their own, our eyes can receive the light emitted by them, and we can naturally see them!

1.There is no atmosphere on the moon and it does not reflect sunlight, so the sky is dark and sunlight can be seen.