how would increasing the concentration of hydrochloric acid affect it's reaction with calcium carbonate?

Question

and would this increase in concentration increase the chances of acid precipitates? please quote the source if possible

Answer 1

I'm assuming the concentration of the calcium carbonate stays the same. If this correct, the increase in concentration would just serve to speed up the reaction and it would serve to complete the reaction until all of calcium carb. is used up leaving excess HCL left, unreacted, the HCL itself would not leave precips. You are going to end up with water, calcium Chloride and CO2, plus lotsa heat.............and unreacted HCL........ so whats remaining would still have a very low pH.

Answer 2

Your question makes no sense.
In a reaction where Ca CO3 and HCl are present, you would obtain ions Ca++ and ions Cl -.
In a greater concentration, there would be a precipitate of CaCl2. The ion CO3- will yield 1 O atom to combine with 2 H's from the HCl and will free CO2 which escapes as a gas