Question

The addition of solid sodium carbonate to pure water results in *
1 point
an increase in H+ ion concentration
an increase in pH
No change in pH
a decrease in OH- concentration​

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+ + CO²-3 + H2O⇌HCO3− + OH− + 2Na+

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

The pH will increase.