sodium hydroxide mixing with sodium carbonate

[marke]

wondering if sodium hydroxide will mix with sodium carbonate. Assuming it does to some solubility level. If I want a 50/50 blend at max solubility how would I calculate how much of each? My quesstimate is about 150 gr hydroxide and 250 of sodium carbonate per gallon ro. Thanks for your help in advance!

 

[Randy Holmes-Farley Verified Community Expert]

Yes, you can combine them. The max solubility of the carbonate will decline as you add sodium hydroxide (by the "common ion effect"), but the sodium hydroxide solubility is nearly unlimited.