1. Weight of benzaldehydeusea in stop 2.-hto--g used in step 2. The molecular we

Question

1. Weight of benzaldehydeusea in stop 2.-hto--g used in step 2. The molecular weight of benzaldehyde is 106.1 g/mole. 110A) male .03 Show your calculations. Weight of crude benzoic acid produced (step 14). benga dleheeta 3. Moles of benzoic acid produced (step 14). The molecular weight of benzoic acid is 122.1 g/mole Show your calculations. 4. Imole ben3ol cind Calculate the percent yield of the benzoic acid that you made from the data above. Show your calculations 5. actval x10( eaece 0 014 100/. 1001. In step 15, were gas bubbles observed, indicative of formation of carbon dioxide? Write a balanced reaction for the reaction of benzoic acid with sodium bicarbonate to give sodium benzoate plus carbonic acid. In a second step, write the balanced reaction for the decomposition of carbonic acid to carbon dioxide plus water. 6. 65

Explanation / Answer

6. benzoic acid with NaHCO3

C6H5COOH + NaHCO3 --> C6H5COONa + H2CO3

decomposition of H2CO3

H2CO3 --> H2O + CO2(g)

7. % yield of conversion of scrap Al to recycled Al

= (28.7) x 100/30.1

= 95.35%

8. For the gicen reaction

a. Al2O3 moles = 200 moles

Theoretical yield of Al formed = 2 x 200 = 400 moles

b. If 0.5 moles Al2O3 reacted,

theoretical yield of Al formed = 2 x 0.5 = 1.0 moles

c. If Al2O3 = 30 g/102 g/mol = 0.294 moles reacted

theoretical grams of Al formed = 2 x 0.294 moles x 27 g/mol = 15.88 g

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