Write the equation for the dissolution of sodium carbonate in water as found in your laboratory guide.
na˘2co˘3 + 2h˘2o —› 2na^+ + 2oh^- + h˘2co˘3

when sodium carbonate is dissolved in water, it doesn’t dissociate, or break up, completely. there is always some sodium carbonate in solution. knowing this, which of the two samples is most alkaline? explain why you say this.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.