Six kinds of particles including H2O, ClO -, NH4+, H+, N2 and Cl - are involved in an ion reaction. Of which N2

Topic content:

Six kinds of particles including H2O, ClO -, NH4+, H+, N2 and Cl - are involved in an ion reaction. The curve of the amount of N2 with time is shown in the figure. The following judgment is correct:

A. The reducing agent of the reaction is Cl -

B. Consume 1 mol of reducing agent and transfer 6 mol of electrons

C. The ratio of oxidant to reducing agent is 2:3

D. The acidity of the solution after the reaction is significantly enhanced

Best answer:

D

Answer analysis:

The equation is 3ClO -+2NH4 ＋=N2 ↑+3H2O+3Cl -+2H ＋. It can be seen from the equation that the reducing agent of the reaction is NH4 ＋, so A is wrong; When the valence of N element increases from - 3 to 0, 1mol of reducing agent is consumed and 3mol of electrons are transferred, so B is wrong; According to the equation, the ratio of the amount of oxidant and reducing agent is 3:2, so C is wrong; The reaction generates H+, and the acidity of the solution increases, so D is correct; Therefore, select D.

Test core:

Introduction to balancing: The chemical reaction equation strictly abides by the law of conservation of mass. After writing the chemical reaction equation and writing the reactants and products, the number of atoms on the left and right sides is often not equal, which does not meet the law of conservation of mass, which needs to be solved by balancing.