Answer:
See explanation below
Explanation:
To do this, we will use the following expression to calculate the [H⁺]:
[H⁺] = Kw / [OH⁻]
[H⁺] is the same as [H₃O⁺]. So we have the [OH⁻] so, let's replace every value into the above expression to calculate the hydronium concentration and say if it's acidic, basic or neutral. This can be known because if the [H⁺] > 1x10⁻⁷ M the solution is acidic. If it's [H⁺] < 1x10⁻⁷ M the solution is basic, and if it's [H⁺] = 1x10⁻⁷ M the solution is neutral.
a) [H⁺] = 1x10⁻¹⁴ / 6x10⁻¹² = 1.67x10⁻³ M. Acidic.
b) [H⁺] = 1x10⁻¹⁴ / 9x10⁻⁹ = 1.11x10⁻⁶ M. Acidic.
c) [H⁺] = 1x10⁻¹⁴ / 8x10⁻¹⁰ = 1.25x10⁻⁵ M. Acidic.
d) [H⁺] = 1x10⁻¹⁴ / 7x10⁻¹³ = 0.0143 M. Acidic.
e) [H⁺] = 1x10⁻¹⁴ / 2x10⁻² = 5x10⁻¹³ M. Basic.
f) [H⁺] = 1x10⁻¹⁴ / 9x10⁻⁴ = 1.11x10⁻¹¹ M. Basic.
g) [H⁺] = 1x10⁻¹⁴ / 5x10⁻⁵ = 2x10⁻¹⁰ M. Basic.
h) [H⁺] = 1x10⁻¹⁴ / 1x10⁻⁷ = 1x10⁻⁷ M. Neutral.
Part B.
In this part, we'll use the following expression and replace the given values:
[OH⁻] = Kw / [H⁺]
Replacing the values:
[OH⁻] = 1x10⁻¹⁴ / 5.2x10⁻⁵
[OH⁻] = 1.92x10⁻¹⁰ M
PArt C:
In this case, we will use expression of part A, and replace the given values:
[H⁺] = 1x10⁻¹⁴ / 2.7x10⁻²
[H⁺] = 3.7x10⁻¹³ M
