which acid reacts the fastest with the metal?

Question

magnesium ribbon + hcl 6 mol/L
+ h2so4 3 mol/L
+ ch3cooh 6 mol/L

Can you explain in terms of dissociation, and wat not.
Also, how would I find the rate from the rate law for each reaction.

*we used a calibrated gas collection tube to measure the h2 released --> my results: hcl fastest....

Answer 1

HF reacts the fastest with metal.

For your other questions, do your own homework.

Answer 2

I would guess HCl

I can tell you why it's not CH3COOH - it's not a strong acid. Weak acids do not completely dissociate, which means that not all the Hydrogen ions come off the CH3COOH molecules where they can react with the metal.

Also, don't be fooled into thinking that the H2SO4 is a less concentrated solution. It has two Hydrogens, so the concentration of H+ ions when it compeltely dissociates is 6 mol/L just like HCl.

I can't tell you why it's HCl over H2SO4 off the top of my head though, sorry.