Complete the equations and arrange the coefficients Cr2O3 + HNO3 = Al + AgNO3 =

The first reaction is the reaction between chromium oxide and nitric acid. As a result of this interaction of substances, a salt of trivalent chromium nitrate is formed and water is released. The chemical equation for the reaction looks like this:

Cr2O3 + 6 HNO3 = 2 Cr (NO3) 3 + 3 H2O.
In order to equalize the reaction, we need to put the number 6 in front of the nitric acid, put the number 2 in front of the chromium nitrate, and put 3 in front of the water.

The second reaction takes place between substances such as aluminum and the silver nitrate salt. An aluminum nitrate salt and pure silver are formed. The molecular equation of the reaction can be written as follows:

Al + 3 AgNO3 = Al (NO3) 3 + 3 Ag.

In order to equalize the reaction, we need to put 3 in front of the silver nitrate, and in the reaction products, put 3 in front of the silver.