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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: skaimomo on December 09, 2020, 07:40:01 PM

Title: Calcium Chloride + Sodium Carbonate + Sodium Hydroxide
Post by: skaimomo on December 09, 2020, 07:40:01 PM

Hello! My teacher asked us to observe various chemical reactions and predict their products but there is one reaction that I cannot comprehend which is CaCl2 + Na2CO3 + NaOH. I cannot find any previous experiments about that reaction so I cannot observe it. But on youtube, I saw an experiment on CaCl2 + Na2CO3 + HCl. What happened in that experiment was that when HCl was poured into the solution, the formed solid precipitate was dissolved. What would happen if instead of HCl, it was NaOH?

Title: Re: Calcium Chloride + Sodium Carbonate + Sodium Hydroxide
Post by: Borek on December 10, 2020, 03:49:10 AM

What was the solid? What was the reaction behind its dissolution in acid?

Title: Re: Calcium Chloride + Sodium Carbonate + Sodium Hydroxide
Post by: skaimomo on December 10, 2020, 04:28:20 AM

Quote from: Borek on December 10, 2020, 03:49:10 AM

What was the solid? What was the reaction behind its dissolution in acid?

The solid precipitate was calcium carbonate

Title: Re: Calcium Chloride + Sodium Carbonate + Sodium Hydroxide
Post by: Lars Fred riksson on January 08, 2021, 04:42:14 AM

I don't think anything should happen at all.

Besides, commercial CaCl2 tend to be somwehat basic due to impurities (CaO?).

Title: Re: Calcium Chloride + Sodium Carbonate + Sodium Hydroxide
Post by: Borek on January 08, 2021, 04:59:22 AM

Hint: metathesis.