Question

The addition of solid sodium carbonate to pure water causes__________ *
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Answer 1

Answer:

An increase in ph

Explanation:

Sodium Carbonate is a salt of carbonic acid with an alkalinizing property. When dissolved in water, sodium carbonate forms carbonic acid and sodium hydroxide.

2Na++CO32−+H2O⇌HCO3−+OH−+2Na+

You can see that the reaction produces OH− ions and thus the solution becomes alkaline.

The pH will increase.

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Answer 2

Na2CO3 + H2O = NaHCO3 + NaOH

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