7. When benzene C 6 H 6 reacts with bromine, bromobenzene C 6 H 5 Br is obtained: C 6 H 6 + Br 2  C 6 H 5 Br + HBr a. What is the theoretical yield of bromobenzene in this reaction when 30 g of benzene reacts with 65.0 g of bromine? b. If the actual yield of bromobenzene was 56.7 g, what was the percentage yield?

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Stoichiometry answer all please

7. When benzene C 6 H 6 reacts with bromine, bromobenzene C 6 H 5 Br is obtained:
C 6 H 6 + Br 2  C 6 H 5 Br + HBr

a. What is the theoretical yield of bromobenzene in this reaction when 30 g of
benzene reacts with 65.0 g of bromine?
b. If the actual yield of bromobenzene was 56.7 g, what was the percentage yield?

 

3. Hydrofluoric acid cannot be stored in glass bottles because compounds called silicates
in the glass are attacked by the HF. Sodium silicate reacts as follows:
Na 2 SiO 3(s) + HF (aq)  H 2 SiF 6 (aq) + NaF (aq) + H 2 O (l)
a. How many moles of HF are needed to react with 0.300 mol of Na 2 SiO 3 ?
b. How many grams of NaF form when 0.500 mol of HF reacts with excess Na 2 SiO 3 ?
c. How many grams of Na 2 SiO 3 can react with 0.800 g of HF?

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