How do I prepare 1% H2SO4 from concentrated sulphuric acid (96% with density 1.84g/ml)? Thank you very much for your help.
There are 0.96*1.84 = 1.7664 g of pure H2SO4 per ml of concentrated H2SO4. You need to add 99 times as much H2O (174.9 g) to have a solution that is 1% H2SO4 by mass. That means adding 174.9 ml of H2O.
That means adding 174.9 ml of H2O.
Although in practice this done the other way round, add the acid to water, NOT water to acid.
add 174.9 ml of H2O to 1ml of H2SO4?
To prepare a 1% H2SO4 (sulfuric acid) solution from concentrated sulfuric acid (96% with density 1.84 g/ml), you need to dilute the concentrated acid with water. Here's a step-by-step guide on how to do it:
1. Start by determining the volume of the 1% sulfuric acid solution you want to prepare. Let's say you want to make 100 ml of the solution.
2. Calculate the volume of the concentrated sulfuric acid needed. To do this, divide the desired volume of the final solution (100 ml) by the desired concentration (1%) to get the initial volume of the concentrated acid.
Volume of concentrated acid = (Desired volume of final solution ÷ Desired concentration)
Volume of concentrated acid = (100 ml ÷ 1%) = 10,000 ml or 10 liters
3. Take the calculated volume of concentrated sulfuric acid (10 liters) and pour it into a container. Make sure to use appropriate safety measures, such as wearing protective gloves and goggles, as concentrated sulfuric acid is highly corrosive.
4. Now, add water to the container in order to dilute the concentrated sulfuric acid. To calculate the volume of water required, subtract the volume of concentrated acid from the total desired volume of the final solution.
Volume of water = (Desired volume of final solution - Volume of concentrated acid)
Volume of water = (100 ml - 10,000 ml) = -9,900 ml or -9.9 liters
Note: The negative sign indicates that you need to add 9.9 liters of water.
5. Slowly add the calculated volume of water (9.9 liters) to the container containing the concentrated sulfuric acid while stirring continuously. It is essential to add the acid to the water slowly and with caution to prevent the generation of excess heat and splattering.
6. Continue stirring the mixture until the acid and water are thoroughly mixed.
7. Once the acid is completely diluted, measure the final volume of the solution to ensure it is 100 ml. Adjust the volume with water if necessary.
Remember, sulfuric acid is highly corrosive and can cause serious harm if mishandled, so always take proper safety precautions when working with it.