Based on the provided reference, making a "hypo solution" typically refers to preparing a sodium hypochlorite solution, specifically a 1% concentration. There are two main ways to achieve this concentration as outlined in the reference.
Understanding Hypo Solution
In various contexts, like photography or disinfection, "hypo solution" is a common term for sodium hypochlorite (NaClO) solution. The concentration needed depends on the application. The reference details how to make a 1% solution, a concentration often used for general disinfection purposes.
Methods for Preparing 1% Sodium Hypochlorite Solution
The reference provides two distinct methods to prepare a 1% weight/volume (w/v) sodium hypochlorite solution. Both methods aim for a solution where there is effectively 1 gram of sodium hypochlorite dissolved in 100 ml of final solution.
Here's how to make it according to the reference:
Method 1: Using Solid Sodium Hypochlorite
This method involves dissolving solid sodium hypochlorite directly in water to reach the desired concentration.
- Step 1: Take 1 gram of sodium hypochlorite.
- Step 2: Dissolve it in 100 ml of water.
This creates a 1% weight/volume (w/v) solution, meaning 1 part by weight of solute (sodium hypochlorite) in 100 parts by volume of solvent (water), resulting in a total volume close to 100 ml.
Method 2: Diluting a Stronger Solution
This method is used when you start with a pre-made, more concentrated solution, such as a 10% sodium hypochlorite solution.
- Step 1: Measure 10 ml of 10% sodium hypochlorite solution using a measuring cylinder or a volumetric flask.
- Step 2: Add distilled water to this 10 ml until the total volume reaches 100 ml.
By taking 10 ml of a 10% solution and diluting it to 100 ml, you effectively reduce the concentration by a factor of 10, resulting in a 1% solution (10% / 10 = 1%).
Table Summarizing Methods:
| Method | Starting Material | Quantity of Starting Material | Final Volume (with Water) | Resulting Concentration |
|---|---|---|---|---|
| Using Solid Chemical | Solid Sodium Hypochlorite | 1 gram | 100 ml | 1% (w/v) |
| Diluting Stronger Solution | 10% Sodium Hypochlorite Solution | 10 ml | 100 ml | 1% |
Remember to use appropriate safety precautions when handling chemicals, especially sodium hypochlorite solutions.
