A mixture of 100m mol of `Ca(OH)_(2)` and 2g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. The mass of calcium sulphate formed and the concentration of `OH^(-)` in resulting solution, respectively, are: (Molar mass of `Ca(OH)_(2),Na_(2)SO_(4)` and `CaSO_(4)` are 74, 143 and 136 g `mol^(-1)` respectively, `K_(sp)` of `Ca(OH)_(2)` is `5.5xx10^(-6)` )
A mixture of 200 mmol of Ca(OH)_2 and 3g of sodium sulphate was dissolved in water and the volume was made up to 200 mL. The mass of calcium sulphate formed and the concentration of OH^(-) in resulting solution, respectively, are: (Molar mass of Ca(OH)_2 , Na_2SO_4 " and " CaSO_4 are 74, 143 and 136 g mol^(-1) respectively, K_(sp) of Ca (OH)_2 is 5 xx 10^(-6) )
5.0 g of sodium hydroxide (molar mass 40 g mol) is dissolved in little quantity of water and the solution is diluted upto 100 mL. What is the molarity of the resulting solution?
5.0 g of sodium hydroxide ("molar mass 40 g mol"^(-1)) is dissolved in little quanitity of water and the solution is diluted upto 100 mL. What is the molarity of the resulting solution ?
The pH of Ca(OH)_(2) is 10.6 at 25^(@)C. K_(sp) of Ca(OH)_(2) is
25.3 g of sodium carbonate, Na_(2)CO_(3) is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ions, Na^(+) and carbonate ions, CO_(3)^(2-) are respectively (Molar mass of NaCO_(3)=106g mol^(-1) )
