Calculate the concentration of H+ ions of an aqueous solution of nitrous acid ( HNO2) to 0.02 mol/L knowing that the degree of ionization of acid is 3%

........HNO2 ==> H^+ + NO2^-

I.......0.02.....0......0
C......-6e-4....6e-4...6e-4
E........you fill in.

To calculate the concentration of H+ ions in an aqueous solution of nitrous acid (HNO2), we need to consider the degree of ionization of the acid. In this case, the degree of ionization is given as 3%, which means that only 3% of the nitrous acid molecules ionize into H+ and NO2- ions.

Step 1: Calculate the concentration of H+ ions after ionization:
Since the degree of ionization is 3%, only 3% of the nitrous acid molecules will ionize into H+ ions.
Concentration of H+ ions = (3/100) x 0.02 mol/L

Step 2: Simplify the calculation:
Concentration of H+ ions = (3/100) x 0.02 mol/L
Concentration of H+ ions = 0.0006 mol/L

Therefore, the concentration of H+ ions in the aqueous solution of nitrous acid with a concentration of 0.02 mol/L and a degree of ionization of 3% is 0.0006 mol/L.

To calculate the concentration of H+ ions in an aqueous solution of nitrous acid (HNO2), we need to take into account its degree of ionization. The degree of ionization represents the percentage of the nitrous acid molecules that dissociate into H+ ions and NO2- ions in the solution.

Given that the degree of ionization is 3%, it means that only 3% of the HNO2 molecules will dissociate, while the remaining 97% will remain as HNO2 molecules. Therefore, we need to first calculate the concentration of HNO2 that dissociates, and then determine the concentration of H+ ions.

Step 1: Calculate the concentration of dissociated HNO2:
Let x be the concentration (in mol/L) of dissociated HNO2.
Since only 3% of HNO2 molecules will dissociate, the concentration of HNO2 that dissociates is 0.03 * 0.02 mol/L = 0.0006 mol/L.

Step 2: Calculate the concentration of H+ ions:
The concentration of H+ ions in the solution is equal to the concentration of dissociated HNO2 because each HNO2 molecule produces one H+ ion upon dissociation.
Therefore, the concentration of H+ ions is 0.0006 mol/L.

Therefore, the concentration of H+ ions in the aqueous solution of nitrous acid is 0.0006 mol/L.