ATAR Notes: Forum

HSC Stuff => HSC Science Stuff => HSC Subjects + Help => HSC Chemistry => Topic started by: janeaustin on January 14, 2019, 08:16:42 pm

Title: Acid + Carbonate Equations
Post by: janeaustin on January 14, 2019, 08:16:42 pm

For Acid + Metal Carbonate reactions, is the state of the metal carbonate reactant always a solid?

For example, the reaction between phosphoric acid and sodium hydrogen carbonate:
H3PO4 (aq) + 3NaHCO3 (s) →  Na3PO4 (aq) + 3CO2 (g) + 3H2O (l)
Why is NaHCO3 a solid? According to the solubility rules, all Group 1 metals (in this case, Na) are soluble, so isn't this carbonate meant to exist in aqueous form?