Answer: Hydrogen ion concentration of the lake is
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration. Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.
To calculate the pH of the solution, we use the equation:
We are given:
pH = 4.0
Putting values in above equation, we get:
Thus hydrogen ion concentration of the lake is
The question is incomplete, here is the complete question:
The rate of certain reaction is given by the following rate law:
At a certain concentration of
As we are given that:
Initial rate = 0.120 M/s
Expression for rate law for first observation:
....(1)
Expression for rate law for second observation:
....(2)
Dividing 2 by 1, we get:
Therefore, the initial rate of the reaction will be, 0.03 M/s
Compounds which on dissolving in water gets completely dissociates into its ions are known as strong electrolytes whereas compounds which on dissolving in water gets partially dissociates into its ions are known as weak electrolytes.
Substances which gives solution on dissolving in water and do not dissociates into ions also does not conduct electric current are known as nonelectrolyte.
On adding (strong acid) in water, it will completely dissociates into ions (
and
) and thus, it is a strong electrolyte.
On adding (strong base) in water, it will completely dissociates into ions (
and
) and thus, it is a strong electrolyte.
On adding (weak acid) in water, it will partially dissociates into ions (
and
) and thus, it is a weak electrolyte.
On adding (weak base) in water, it will partially dissociates into ions (
and
) and thus, it is a weak electrolyte.
On adding in water, it will completely dissociates into ions (
and
) and thus, it is a strong electrolyte.
On adding in water, it will not dissociates into ions and thus, it is a nonelectrolyte.
On adding in water, it will not dissociates into ions and thus, it is a nonelectrolyte.