Determining sodium carbonate content in a salt mixture

[George3]

Homework Statement

Given a mixture of salt and sodium carbonate, how could you determine the amount of sodium carbonate in the mixture?

Homework Equations

The Attempt at a Solution

Salt and sodium carbonate are both soluble, so I would I use HCl to react with the Na2CO3 leaving the NaCl H20 and CO2? And then boil the salt water?

 

[mgb_phys]

Not a chemist, but sodium carbonate must be acidic in water - could you just do a titration ?

 

[Borek]

Not a chemist, but sodium carbonate must be acidic in water - could you just do a titration ?

Quite the opposite, it will be slightly basic

But titration (with a strong acid) is still a good idea.

 

[mgb_phys]

Doh - Sodium Carbonate is washing soda, must be alkali!