A simple chemistry question in the first year of high school, a simple chemistry question in the fir

so2+cl2+2h2o=2hcl+h2so4

The reaction produces a strong acid, so the answer is D

The discoloration reaction of SO2 is combined with colored substances, and the fading reaction of Cl2 is to react with water to form HCro and then bleached by HCo, both of which require the participation of water, but the reaction intensity of SO2+Cl2+2H2O=H2SO4+2HCl is greater than the intensity of the reaction between the two and water alone, so it occurs first.

Answer the question to guess the teacher's mind The key to this question is to test the reaction of SO2 and CL2, and I want you to know that the substances produced after their reaction cannot be bleached, and your task is to tell him that you will.

The college entrance examination is as simple as that.

Look at the title description: two gases of equal amount are "mixed" to act on a moist colored substance.

Mixing is a reaction, because this is not a reversible reaction, so the reaction is completed after mixing, and the bleaching of the two substances disappears naturally after the reaction.

Cl2 has strong oxidizing properties, while sulfur dioxide has strong reducing properties (stronger reducing than colored substances), so chlorine gas oxidizes sulfur dioxide first.

The reaction strength of SO2+Cl2+2H2O=H2SO4+2HCl is greater than the strength of the reaction of both with water alone, so it occurs first.

In summary. for dGood luck!

It is mixed first, and then it is introduced into the colored substance.

What you say can be ignored and approximated as a complete reaction at once.

cl(2)+so(2)+2h(2)o=2hcl+h(2)so(4)

The oxidizing Cl(2) and the SO(2) with a certain reduction have the above reaction, and there is no bleaching after the solid reaction. The two cannot be used together for bleaching.

The questions specially designed for test-oriented education, you will slowly get used to it in the future, I am finally relieved, SO2 and CL2 do not react when mixed in dry conditions, and the answer should be fading.

1 2mol hydrogen and 1 2mol iodine are reacted to form 1mol of Hi, which requires 1 2molH-h bond and 1 2Moli-I bond to break (absorb the energy of 1 2*436+1 2*151= kJ), and to generate 1molH-I bond, 299kJ of energy is released. then the heat emitted is. The answer is.

Note: The symbols of the values of absorbed energy and exerted energy are reversed.

Note that if a 1 molar h-i bond is generated, the energy released is .