42. Solving a chemistry problem

31. Using the data in the table, write the reaction equations used in the analysis and calculate:
a) sample size for analysis (g);
b) amount of precipitant (ml);
c) the value of the analytical multiplier (conversion factor);
d) the content of the analyte in the analyzed object (g or %).

Analyzed object analyte Scheme of analysis Precipitator Weight of the weight form, g Precipitated form of sediment
Mora Technical Salt
FeSO4(NH4)2SO4*6H2O,
containing 20% impurities Fe Fe→Fe(OH)3→Fe2O3 5M ammonia solution 0.1438 amorphous