a) What amount of chlorine gas is obtained by treating 80 g of magnesium dioxide in excess of HCl the following reaction?
MnO2 + 4 HCl => MnCl2 + 2H2O + Cl
b) The caustic soda, NaOH is prepared commercially by reaction of Na2CO3 with slaked lime, Ca (OH)2. The reaction also produces calcium carbonate.
* Write the balanced equation
* How many grams of NaOH can be obtained by treating a kilogram of Na2CO3 with Ca(OH)2 in excess.