2AI) A Fluoride of Phosphorous Y, contains 24.6% by mass of phosphrous and has a molar mass of 126gmol-1 Deduce the Molecular formula.
2c) when hydrogen fluoride is dissolved in water a solution of a weak acid is formed. write the expression for the acid disocciation constant, Ka, for hydrogen fluroide. Calculate the value of Ka, with units given that 0.150 mol dm-3 solution of hydrogen flouride has a pH of 2.04.
1b) what indicator did you use and why?
1c)Suggest a Chemical test to confirm the presence of ammonia in solution X.