Question

в воде растворили 5 молей соли распалось на ионы 4,5 молоко какова степень диссоциации этой соли в% а)60 б)70 в)85 г)90​

Answer 1

Ответ:

г

Объяснение:

4.5/5×100%=0.9×100%=90%

Answer 2

Calculation of the Degree of Dissociation of a Salt in Water

To calculate the degree of dissociation of a salt in water, we need to know the initial concentration of the salt and the concentration of the ions formed after dissociation. In this case, we are given that 5 moles of salt were dissolved in water and it dissociated into ions, with 4.5 moles of ions formed.

The degree of dissociation (α) is defined as the ratio of the moles of ions formed to the moles of salt initially dissolved, multiplied by 100 to express it as a percentage.

The formula to calculate the degree of dissociation is:

α = (moles of ions formed / moles of salt initially dissolved) * 100

Let's calculate the degree of dissociation for the given scenario:

α = (4.5 moles / 5 moles) * 100

α = 90%

Therefore, the degree of dissociation of this salt in water is 90%.

Please note that the sources provided did not directly answer the question. However, the calculation of the degree of dissociation is a fundamental concept in chemistry and does not require specific sources for verification.