Limestone and dilute hydrochloric acid can not make clear lime water becomes muddy, why
The gas is produced to clarify the water, rather than the 3 reactions
Limestone and dilute hydrochloric acid reaction is the production of CO2, and then into the Ca (OH) 2, so that the clarification of lime water turbidity, the formation of CaCO3 precipitation (turbidity). The condition is in the alkaline solution; and can not make clear the water becomes muddy, that is, the solution is acidic will also generate precipitation, can dissolve the reason.
A small amount of limestone is added to dilute hydrochloric acid, reaction CO2, pass into the clear limewater, and cannot make clear limewater turbid phenomenon, because in clarifying lime CO2 will carry, into hydrogen chloride, the calcium carbonate precipitation, and re dissolved in dilute hydrochloric acid chloride ("Li h);
