21. Solving a chemistry problem

21. Solving a chemistry problem

36. Using the data in Table. 1, 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 (or element) in the analyzed object (g or %).

No.
p/n Analyzed object Determined
substance Scheme of analysis Precipitator Weight
weight
forms besieged
sediment shape
36 Technical MgSO4 7H2O containing about 5% impurities MgSO4 Mg→MgNH4PO4→Mg2P2O7 1M Na2HPO4 solution 0.2488 Amorphous

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