A sophomore chemistry fill in the blank question, sophomore chemistry fill in the blank question, ur

Methanol is toxic and typically cannot be used to make wine. A small amount can blind a person, and a large amount can kill a person.

Ethanol can be used for medical disinfection and can also be used for the processing of beverages.

Acetic acid In the food industry, acetic acid is a specified acidity regulator in the food additive list E260.

Baking soda is used as a starter for food work, a generator of carbon dioxide in soda and cold drinks, and a preservative for butter. It can be directly used as a raw material in the pharmaceutical industry for ** hyperacidity.

Formaldehyde Formaldehyde is toxic and cannot be used in the food industry.

Industrial alcohol is the same as methanol. Not available.

1 = 6 can poison people, go blind and even die.

5 It can also poison people and cause cancer.

Methanol (also known as industrial alcohol, toxic) and formaldehyde (still toxic), ethanol needless to say, there are only different concentrations in ordinary wine, acetic acid is the vinegar used for acetic acid to cook the raw material, baking soda is used to steam steamed bread when the dough is made.

1 Methanol is an industrial alcohol that is harmful to people.

5. Formaldehyde is a toxic gas and is also harmful to people. A few percent of methanol can cause irreparable damage to human organs. 6 with 1

After the aluminum product is placed in liquid chlorine for a period of time, the aluminum is corroded, and this corrosion is called chemical corrosion The chemical equation of the reaction is 2Al+3Cl2==2AlCl3. If aluminum products are placed in salt water for a period of time, aluminum will also be corroded, this corrosion is called electrochemical corrosion, and the principle of the reaction is that table salt plays the role of an electrolyte solution, and a galvanic cell reaction will occur.

(1) At equilibrium, d is generated, that is, left, and the volume fraction is the quantity fraction of the substance 9 23

2) is equivalent equilibrium, i.e. from the beginning of the positive reaction, the amount of each substance is the same. d translates to a, b respectively. should be added.

From the meaning of the title, it can be seen that the amount of substance c in the container after 5s is.

3a(g)+b(g) = xc(g)+2d(g)start: 0 0

Reaction 2mol 1mol

Equilibration 2mol 1mol

From the relationship between the quantities c and d in the equation, we can see that x 2 = 2 1x = 4