Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water.

Thank you

How many moles do you want? M x L = 0.1MHCl x 2.5L = 0.25 mols.

So you need 0.25 mols of the 12M HCl.
M = mols/L. You know M and you know mols; solve for L of the 12 M you need. Take that amount of 12M HCl and add water to make 2.5L of solution.

How to prepared a 0.1MHCL from concentrated HCL

To make 2.5L of a 0.1M HCl solution from a 12M HCl concentrated solution and water, you'll need to utilize the concept of dilution. Dilution is the process of reducing the concentration of a solute in a solution by adding more solvent.

Here's the step-by-step guide on how to make the desired solution:

1. Start by calculating the amount of concentrated 12M HCl solution you would need. To do this, we will use the dilution equation: C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Let's assume you want to make 2.5L of a 0.1M HCl solution. So, plugging in the values:
C1 = 12M (concentration of the concentrated solution)
V1 = ? (volume of the concentrated solution)
C2 = 0.1M (final desired concentration)
V2 = 2.5L (final desired volume)

Rearranging the equation, we get:
V1 = (C2 * V2) / C1
V1 = (0.1M * 2.5L) / 12M

Calculating V1, we find:
V1 ≈ 0.021L or 21mL

So, you will need approximately 21mL of the concentrated 12M HCl solution.

2. Take 21mL of the concentrated 12M HCl solution using a pipette or a measuring cylinder and transfer it to a suitable container. Ensure the container is resistant to the acidic nature of HCl.

3. Now, add water to the container to reach a final volume of 2.5L. Use a graduated cylinder or any measuring instrument capable of measuring volume accurately.

4. After adding water, carefully mix the solution by stirring gently until the HCl and water are thoroughly mixed.

5. Finally, you have prepared a 2.5L of a 0.1M HCl solution. Be cautious when working with HCl as it is highly corrosive and can cause burns. Make sure to follow proper safety protocols and handle it with care.

It's worth noting that precision in measurement and accuracy in calculations are crucial when working with chemical solutions. Always double-check your measurements, as even slight errors can affect the desired concentration.