About Senior One Chemistry Simple 15

Organic Chemistry is not an elective 5 course.

1.Benzene (benzene ring) Ethanol (hydroxy-OH) Acetic acid (carboxy-COOH) sugars: Glucose (is an aldose containing hydroxy-OH; aldehyde-cho) protein (amino-NH2; Carboxyl-COOH).

2.Benzene (benzene ring, planar structure).

Sugars: glucose (a straight chain composed of six carbons, with an aldehyde group at the end of the chain and a hydroxyl group attached to the remaining five carbons); Starch (is a polymer compound).

Oils and fats (which are esters formed by the dehydration of one molecule of glycerol and three molecules of higher fatty acids) and proteins (all have a unique and stable structure in their natural state)3Fats and fats have a molecular formula (**).

4.Just check the use, it's too troublesome to play.

Methane doesn't have it.

If benzene, does the benzene ring count?

Ethanol: -OH (hydroxyl).

Acetic acid: -COOH (carboxyl).

Carbohydrates: polyhydroxyaldehydes, -cho (aldehyde group)-OH

Grease. Proteins are made up of amino acids, and amino acids have functional groups -NH2 and -COOH2 that are available in this book? But don't try to find oils and proteins, it's impossible, so many kinds, all of them are not the same, you can't find them.

Saying that proteins are made up of amino acids is not a structural feature.

3. I can't write the formula of fats and proteins, and you don't tell me what kind of protein you have, and there is not only one protein.

Moreover, this is generally only written amino acids, the relative molecular weight of the protein is more than 10,000, think about how many amino acids? It's not exhausting to write...

4. It can provide energy by oxidation, and oxidation and heat release maintain human body temperature.

Proteins are the main components of cells.

Energy is mainly** sugars, followed by fats, and finally proteins.

I don't think there's anything wrong with that... If there's a mistake, don't flatten me, I'm only in my third year of junior high school, and I've read part of the chemistry book in high school).

nahco3+so2==nahso2+co2

Saturated NaHCO3 solution does not react with CO2.

However, its solution is alkaline and can react with SO2.

DA if there is an excess of Na2CO3.

Na2CO3 + CO2 + H2O = 2NaHCO3C is ironclad.

B is a little worse than D in b and d.

But not only the SO2 is removed but also the CO2 is generated in D, so D is better PS: in fact, the solubility of CO2 in D is smaller than that of B.

2nahco3+so2=na2so3+2co2+h2oI hope to help you, don't know how to ask.

so2+h2o=h2so3

The total equation NaHCO3+H2SO3==NAHSO3+CO2+H2O NAHC3+SO2==NAHSO3+CO2 will not change much in a short period of time, although the reaction between sulfur dioxide and water is reversible.

The best answer is to choose D

The saturated NaHCO3 solution in the D answer could have been used to collect CO2, and the reaction of SO2 gas and saturated NaHCO3 solution to form gas CO2 can remove impurities without bringing impurities.

AC should react with CO2, Na2CO3 + CO2 + H2O = 2NaHCO3 2 NaOH + CO2 = Na2CO3 + H2O

B, bromine water can react with SO2 SO2 + BR2 + H2O = 2HBR + H2SO4 does not react with CO2 but it can be volatile, so the best one is D

In fact, if there is acidic potassium permanganate, it is also possible.

It would have been: SO2 + H2O + NaHCO3 = CO2 + H2O + NaHSO3

Eliminate H2O on both sides: SO2 + NaHCO3 = CO2 + NaHSO3

In this way, only SO2 is removed. The amount of CO2 required for the generation of CO2 is required.

CO2 + H2O = H2CO3 with saturated NaHCO3 solution.

No reaction SO2 + H2O + NaHCO3 = CO2 + H2O + NaHSO3 removes SO2

1, m(na)=23,m(cl)=,m(nacl)=,m(nacl)=,m(nacl)=23+,n(nacl)=m(nacl) m(nacl)=,n(nacl)= (na is the constant of avogadro) sodium ion number = chloride ion number = the amount of nacl of the substance, the ion number is twice that of n(nacl) (because there are two ions.

2. A, C have the above analysis, you should understand it!

1.The amount of substance of NaCl is:

Contains ( ) sodium ions, ( chloride ions, co-ions ( 2 aThe number of molecules and the number of atoms are correct.

1.Number of sodium ions: pcs.

Number of chloride ions: pcs.

Number of co-contained ions: 2*.

2.Choose C

1, The molecular weight of NaCl is so the amount of its substance is.

Because the number of molecules in 1mol is 10 to the 23rd power).

And each NaCl has one Na+ ion and one Cl- ion, for a total of two ions.

So there is a Na+ and Cl- in NaCl, and the total number of ions is 2 times.

2, a and c This is the theorem,