Question 22 (Essay Worth 8 points) (05.07 HC)
In the following reaction, oxygen is the excess reactant.
SÍCIA + O2 - SiO2 + Cl2
The table shows an experimental record for the above reaction.
Experimental Record
Trial Starting Amount of SiCl4 Starting Amount of O2 Actual Yield of SiO2
1
120 g
240 g
38.2 g
N
75 g
50 g
25.2 g
a. Calculate the percentage yield for SiO2 for Trial 1. Also, determine the leftover reactant for the trial. Show your work
b. Based on the percentage yield in Trial 2, explain what ratio of reactants is more efficient for the given reaction.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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