For purposes of discussion... and my peace of mind,
When HCl or pH down(H2SO4) is added to water with high kH.
what happens to the bicarbonates & carbonates in this buffer equation
H2CO3 H+ + HCO3- H+ + CO3--
I know the strong acids above will dissociate and "eat up" some kH.
But what i do not know is what happens to the carbonates and their Ca++/Mg++ pair
Does the acid break up the bicarbonate to release CO2 and form calcium chloride/sulphate salt?

When HCl or pH down(H2SO4) is added to water with high kH.
what happens to the bicarbonates & carbonates in this buffer equation
H2CO3 H+ + HCO3- H+ + CO3--
I know the strong acids above will dissociate and "eat up" some kH.
But what i do not know is what happens to the carbonates and their Ca++/Mg++ pair
Does the acid break up the bicarbonate to release CO2 and form calcium chloride/sulphate salt?