Concentration Definition. In chemistry, concentration refers to the amount of a substance per defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration usually is expressed in terms of mass per unit volume.
Concentration = no of moles of solute/solvent
Answer:
that symbol less than atomic number 14 and greater than mass number 23.2 is mg
Answer:
are being used up faster than they are being created
Explanation:
done
Answer: The pH of the solution will decrease by 1 unit.
Explanation:
Let say the hydronium ion concentration of a solution is 0.001
pH = - log [H+]
= -log 1.0 x 10^3 = 3
if the hydronium ion concentration is increased by 10 , that is: 0.001 x 10 = 0.01
pH = -log [1.0 x 10^2]
= 2
Therefore, the pH is reduced by 1 unit when the hydronium ion concentration is increased by a factor of 10.
A neutral solution means we are having equal amount of H⁺ and OH⁻. As we know,
Kw = [H⁺] [OH⁻] ------ (1)
So, in order to calculate Kw we first need to calculate [H⁺] and [OH⁻],
As, pH = -log [H⁺]
Or,
[H⁺] = 10⁻ˣ ∴ x = pH = 7.61
Putting value, and solving
[H⁺] = 2.45 × 10⁻⁸
As, our system is neutral, so concentration of [OH⁻] is exactly equal to concentration of [H⁺]. Now, putting values of [H⁺] and [OH⁻] in equation 1.
Kw = [2.45 × 10⁻⁸] [2.45 × 10⁻⁸]
Kw = 6.00 × 10⁻¹⁶