How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL) Is it 2.28mL of conc HCl dilute to 100mL with water? Please show the calculation steps.

Answer 1

Yes, you can prepare 100mL of 10g/L HCl from concentrated HCl (37%HCl, density 1.19g/mL) by using 2.28mL of conc HCl and diluting it to 100mL with water.

Calculation steps:

1. Calculate the mass of HCl in 2.28mL of concentrated HCl:

Mass of HCl = Volume of HCl x Density of HCl

Mass of HCl = 2.28mL x 1.19g/mL

Mass of HCl = 2.7132g

2. Calculate the required concentration of HCl:

Required concentration of HCl = Desired mass of HCl/Volume of solution

Required concentration of HCl = 10g/100mL

3. Calculate the volume of concentrated HCl needed:

Volume of concentrated HCl = Desired mass of HCl/Required concentration of HCl

Volume of concentrated HCl = 10g/10g/L

Volume of concentrated HCl = 2.28mL