a. Discuss the physical and chemical compositions of ALL the substances in TABLE Q1. Hence, provide ONE (1) reaction that can occur from any of the substances with elaboration. Table Q1 Substance Formula State of matter (25'C ,1 atm) Water H2O Liquid Copper Cu Solid Ethanol C2H5OH Liquid Carbon Dioxide CO2 Gas Sodium chloride NaCl Solid
a. Discuss the physical and chemical compositions of ALL the substances in TABLE Q1. Hence, provide ONE (1) reaction that can occur from any of the substances with elaboration.
Table Q1
| Substance | Formula | |
| Water | H2O | Liquid |
| Copper | Cu | Solid |
| Ethanol | C2H5OH | Liquid |
| Carbon Dioxide | CO2 | Gas |
| Sodium chloride | NaCl | Solid |
b. Using your knowledge of chemistry, comment on at least TWO (2) different elements in periodic table by comparing the properties and position of your chosen elements. Elaborate the differences.
c. Scientists in industry work to maximize the yield of reactions and maximize profits. However, under experimental conditions and especially in large-scale processes, many factors result in a reduced yield of products. For example, in the manufacture of phosphoric acid, molten elemental phosphorus is oxidized and then hydrated using excess water according to the following equation:
P4 (l) + 5O2 (g) + 6H2O (l) ⎯→ 4H3PO4 (aq)
By using your knowledge in chemistry, demonstrate the difference between the limiting reagent, excess reagent, and theoretical yield by referring to the above equation. Propose any relevant calculation to support your answer. Hence, explain on the possible factors that could affect the yield of products.
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