Senior 1 Chemical Reaction Please answer in detail, thank you 17 19 2 23

Such a problem is to be balanced.

Trimming, of course, to be determined first.

Let the sulfur dioxide be preceded by a. Nitric acid is preceded by b

Through the conservation of the sulfur element, it is known that the sulfuric acid is also a in front of it. Conservation of nitrogen until nitric oxide is preceded by b, and then by the conservation of hydrogen acid out of water in front: (2a-b) 2

a]so2+[(2a-b)/2]h2o+[b]hno3==[a]h2so4+[b]no

Then by the charge conservation trim. The price of the rise is on the side. Put the price reduction on the other side.

a*2=3*b

A=3b 2 can be obtained, which is substituted into the original coefficient and simplified.

3b/2]so2+[b]h2o+[b]hno3==[3b/2]h2so4+[b]no

Round. Get the equation.

3so2+2h2o+2hno3==3h2so4+2no

The reducing agent is oxidized in the reaction, i.e., the price increases. So sulfur dioxide is a reducing agent, so the number of measurements is 3...

Detailed enough...

3SO2 + 2H2O + 2HNO3 = 3H2SO4 + 2NO The number of chemometers is the one that precedes the chemical formula.

Because S changes from +4 to +6, the price increase is a reduction squeeze.

So for 3 high school I haven't learned the electronic trim method. I'm also a freshman in high school.

Is there a requirement for trim in the first year of high school? It's so hard for a student...

The full-text expression is ugly, and the following is expressed with symbols and words.

Trim method. Analysis: Sulfur is an increase in price, and nitrogen is a decrease in price.

Let's start with the following formula: SO2 + H2O + HNO3 - H2SO4 + NO calculation method: (nitrogen drop 3, then sulfur multiplied by 3; In the same way, if the sulfur rises by 2, then nitrogen is multiplied by 2) SO2 + H2O + HNO3 - H2SO4 + NO to give the following equation:

3 so2 + h2o + 2 hno3 ——h2so4 + no

Next, you only need to follow the conservation of matter to get the balanced reaction formula, which is as follows:

3 so2 + 2 h2o + 2 hno3 ——3 h2so4 + 2 no

Reducing agent refers to a substance that loses electrons (that is, is oxidized) in the reaction and increases its valency (in contrast, the oxidant obtains the electrons of the reducing agent, and the valency decreases, which is reduced).

Therefore SO2 is a reducing agent with a stoichiometric number of 3.

Ca: Alumina reacts with dilute nitric acid first, and then aluminum reacts again.

B: React with hydrochloric acid into water, aluminum chloride, and aluminum re-react.

C: Alumina does not react with nano3, and salt does not react with oxide D: Alumina is an amphoteric oxide, which reacts with a strong base to form metaaluminate and water.

al2o3+2naoh==2naalo2+h2o

cab are acids that react with oxides of aluminum.

d The oxide of aluminum is amphoteric and can react with acids or bases.

c Alumina is an amphoteric compound that reacts with both acids and bases.