Question

1)вычислить концентрацию ионов водорода 6%-ного раствора HCl?

Answer 1

K=1*10⁻⁷ моль/л
ρ(p-pa HCl) = 1,0279 г/мл
рК= -7
См = 1,691 моль/л
α=√К/См = √1×10⁻⁷/1,691 = 2,43×10⁻⁴ 
отсюда: [H⁺] = α×Cм = 2,43×10⁻⁴×1,691 = 4,11×10⁻⁴ моль/л
ІІ cпособ: [H⁺] = √КСм = √1×10⁻⁷×1,691 = 4,11×10⁻⁴ моль/л
Ответ: 4,11·10⁻⁴ моль/л

Answer 2

Calculating the Concentration of Hydrogen Ions in a 6% Solution of HCl

To calculate the concentration of hydrogen ions in a 6% solution of HCl, we can use the following steps:

1. Determine the Molarity of the Solution: - The molarity of a solution is defined as the number of moles of solute per liter of solution. In this case, the solute is HCl.

2. Calculate the Concentration of Hydrogen Ions: - Once we have the molarity of the solution, we can use the stoichiometry of the dissociation of HCl to calculate the concentration of hydrogen ions.

Calculation Steps

1. Determine the Molarity of the Solution: - The molarity of a 6% solution of HCl can be calculated using the formula: ``` % concentration = (moles of solute / volume of solution in liters) * 100 ``` From the given information, we can calculate the molarity of the HCl solution.

2. Calculate the Concentration of Hydrogen Ions: - The dissociation of HCl in water is represented by the equation: ``` HCl (aq) → H+ (aq) + Cl- (aq) ``` Since HCl is a strong acid, it completely dissociates in water, meaning that for every mole of HCl that dissolves, one mole of H+ ions is produced.

- Therefore, the concentration of hydrogen ions in the solution will be equal to the molarity of the HCl solution.

Conclusion

By following these steps, we can determine the concentration of hydrogen ions in a 6% solution of HCl.