You titrate a 10.0 mL sample of phosphoric acid with a 1.65 M solution of the base potassium hydroxide. It takes 7.55 mL to reach the endpoint of the titration. What is the molar concentration of the original solution of phosphoric acid?

Question

You titrate a 10.0 mL sample of phosphoric acid with a 1.65 M solution of the base potassium hydroxide. It takes 7.55 mL to reach the endpoint of the titration. What is the molar concentration of the original solution of phosphoric acid?
3KOH + H3PO4 --> K3PO4 + 3H2O

DrBob222 · Answer

H3PO4 + 3KOH ==> K3PO4 + 3H2O mols KOH = M x L = ? Convert mols KOH to mols H3PO4. M H3PO4 = mols H3PO4/L H3PO4

Anonymous · Answer

You should learn doing your own homework and stop using the internet as your lecturer.