Question

- P4(s) + O2(g) P4O6(S) If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P4O6, what is the percent yield for the reaction? Q4. Hydroxylamine hydrochloride is a powerful reducing agent which is used as a polymerization catalyst. It contains 5.80 mass % H, 20.16 mass % N, 23.02 mass % 0, and 51.02 mass % CI. What is its empirical formula? Determine the molecular formula of the compound with molar mass of 278 g. Q5. When 1.50 mL of 3.5-M Barium chloride is mixed with 2.50 mL of 0.65-M sodium sulfate, a precipitate of Barium sulfate is formed along with sodium chloride. Calculate the theoretical yield (in grams) of the barium sulphate and identify the limiting reactant. Calculate the grams of the reactant in excess (left over) after the reaction is complete. Q6. A) Name the following compounds: (5 Marks) Na2Cr2O7 Cl207 CuSO4 As(NO2) H.SO4 She sauce Sulfuric Acid B) Write Formula for the following Compounds (5 Marks) Potassium perchlorate Barium nitrite Iron(III) hydroxide Tetraphoshorous trisulfide Phosphoric Acid Hz PO, Q7. Determine how many grams of ammonium phosphate would be needed to prepare 650 mL of 3.5% (m/v) ammonium phosphate solution. Q8. How many microlitres of water should be added to 50.0 mL of a 12.00 M Solution to obtain a solution with concentration of 6.00 M? Q9. What is the molarity of 65.0 mL of H3PO solution that will completely react with 55.0 mL of 0.3 M of KOH solution?