2hcl- + k2co3====>2h2co3+2kcl
Copper Carbonate
Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
Carbonate
CO2
Calcite
Copper Carbonate
Dilute hydrochloric acid? Carbon dioxide gas escapes and leaves sodium chloride solution, possibly leaving either an excess of acid, or an excess of sodium carbonate.
Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
Carbonate
Preparation of standard solution and standardization of hydrochloric acid Objective : To prepare a standard solution of sodium carbonate and use it to standardize a given solution of dilute hydrochloric acid. Introduction : Anhydrous sodium carbonate is a suitable chemical for preparing a standard solution (as a primary standard). The molarity of the given hydrochloric acid can be found by titrating it against the standard sodium carbonate solution prepared. The equation for the complete neutralization of sodium carbonate with dilute hydrochloric acid is Na2CO3(aq) + 2HCl(aq) → 2NaCl(aq) + CO2(g) + H2O(l) The end-point is marked by using methyl orange as indicator. Chemicals :solid sodium carbonate, 0.1 M hydrochloric acid
CO2
Calcite
CO2 is emitted.CaO is formed.
by measuring the amout of gas produced, divided by the time taken
Potassium reacts explosively.
Carbon Dioxide
Neutralization