Question:
A solution has $ H^{+} $ ion concentration $0.0005\, M$. Its $ pOH $ is
A solution has $ H^{+} $ ion concentration $0.0005\, M$. Its $ pOH $ is
Updated On: Jun 23, 2023
- 8.279
- 12.285
- 10.699
- 13.335
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The Correct Option is C
Solution and Explanation
$\left[H^{+}\right]=0.0005=5 \times 10^{-4}$
$\left[O H^{-}\right]\left[H^{+}\right]=10^{-14}$
$\left[O H^{-}\right] \times 5 \times 10^{-4}=10^{-14}$
$\left[O H^{-}\right]=\frac{10^{-14}}{5 \times 10^{-4}}=2 \times 10^{-11}$
$p O H=-\log \left(2 \times 10^{-11}\right)$
$=10.699$
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Concepts Used:
Solutions
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
Types of Solutions:
The solutions can be classified into three types:
- Solid Solutions - In these solutions, the solvent is in a Solid-state.
- Liquid Solutions- In these solutions, the solvent is in a Liquid state.
- Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:
- Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
- Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
- Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.