how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in 250ml volume.
how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in 250ml volume.
given,
Formula: H3PO4
Melting point: 42.35 °C
Density: 1.88 g/cm³
Molar mass: 98 g/mol
29.4
To prepare different concentrations of phosphoric acid solutions, you will need to measure the appropriate volumes of concentrated phosphoric acid and add the corresponding volumes of water. Here are the steps to prepare 10%, 20%, and 30% phosphoric acid solutions in a 250ml volume:
1. 10% Phosphoric Acid Solution:
- We know that a 10% phosphoric acid solution contains 10% phosphoric acid and 90% water.
- To prepare a 250ml solution, multiply the volume by the desired concentration (10%) to calculate the volume of concentrated acid needed: 250ml * 0.10 = 25ml.
- Measure 25ml of concentrated phosphoric acid using a measuring cylinder or a pipette.
- Add 225ml of water to the measured phosphoric acid to bring the total volume to 250ml.
2. 20% Phosphoric Acid Solution:
- A 20% phosphoric acid solution contains 20% phosphoric acid and 80% water.
- Multiply the desired concentration (20%) by the total volume (250ml) to find the volume of concentrated acid required: 250ml * 0.20 = 50ml.
- Measure 50ml of concentrated phosphoric acid.
- Add 200ml of water to reach the final volume of 250ml.
3. 30% Phosphoric Acid Solution:
- For a 30% phosphoric acid solution, the concentration of phosphoric acid is 30% and water is 70%.
- Multiply the desired concentration (30%) by the total volume (250ml) to find the volume of concentrated acid you need: 250ml * 0.30 = 75ml.
- Measure 75ml of concentrated phosphoric acid.
- Add 175ml of water to reach a total volume of 250ml.
Remember to handle concentrated acids with caution, as they can be hazardous. It's advisable to wear protective goggles and gloves while handling these chemicals. Always add the acid to the water slowly and in a well-ventilated area to prevent any splashing or release of fumes.
To prepare a solution of 10%, 20%, or 30% phosphoric acid from a concentrated solution, you will need to know the concentration of the concentrated solution. Let's assume the concentrated solution has a concentration of 100%.
To calculate the amount of concentrated solution and the amount of water needed to prepare a specific percentage, you can use the formula:
(V1 * C1 = V2 * C2)
Where:
V1 = Volume of concentrated solution
C1 = Concentration of concentrated solution
V2 = Total desired volume of the solution
C2 = Desired concentration of the solution
Let's break down the steps to prepare each percentage:
1. 10% Phosphoric Acid:
To prepare 10% of phosphoric acid in a 250ml volume, we can set up the equation as follows:
(V1 * 100% = 250ml * 10%)
We know that 10% is equal to 10% phosphoric acid and 90% water.
So, the equation becomes:
(V1 * 100% = 250ml * 10%)
(V1 = (250ml * 10%)/100%)
Solving this equation will give you the volume of the concentrated solution, which is needed to prepare the desired concentration.
2. 20% Phosphoric Acid:
To prepare 20% of phosphoric acid in a 250ml volume, we can use the same formula as before:
(V1 * 100% = 250ml * 20%)
(V1 = (250ml * 20%)/100%)
Solving this equation will give you the volume of the concentrated solution, which is needed to prepare the desired concentration.
3. 30% Phosphoric Acid:
To prepare 30% of phosphoric acid in a 250ml volume, we can again use the same formula:
(V1 * 100% = 250ml * 30%)
(V1 = (250ml * 30%)/100%)
Solving this equation will give you the volume of the concentrated solution, which is needed to prepare the desired concentration.
By using these calculations, you can determine the required volume of the concentrated solution and the amount of water to prepare 10%, 20%, or 30% phosphoric acid in a 250ml volume.