Question

1. A lab tech needs 1.00 L of 0.125 mol/L sulfuric acid solution for a quantitative analysis experiment. A commercial 5.00 mol/L sulfuric acid solution is available from a chemical supply company. Write out what steps he/she would follow to prepare the needed solution. Include all necessary calculations.

Do I just solve for final volume and then write what to do?

Answer 1

Calculate the mass of solid cobalt(II) chloride hexahydrate you need to prepare 100.0 mL of a 0.100 mol/L cobalt(II) chloride solution.

Answer 2

Yes, solve for the final volume and explain what to do. Remember to add the ACID to the water, let cool (if needed) and make to final volume.

For the CoCl2.6H2O, how many mols do you need. That's mols = M x L = ?
Then mols = grams/molar mass. YOu know molar mass and mols, solve for grams.