Question

7. Calculate the maximum amount of hexaphenylbenzene (molar mass = 534.7 g/mol) possible (theoretical yield) when 125 mg of diphenylacetylene (molar mass - 178.2 g/mol) reacts with 125 mg of tetraphenylcyclopentadienone (molar mass 384.5 g/mol). Give your answer in units of milligrams (mg). The reaction is given below. 8. Calculate the percent yield when 75.0 g of diphenylacetylene (molar mass = 178.2 g/mol) reacts with 75.0 g of tetraphenylcyclopentadienone (molar mass = 384.5 g/mol) and produces 75.0 g of hexaphenylbenzene (molar mass = 534.7 g/mol). The reaction i given below. *.1

Answer 1

Qul:7, Griven balance chemical Reaction:- ph ph. ph Ph. - i " + co phVph eh diphenyl Tetraphenyl Cyclopentadienone Acetylene mass of diphenylacetylene -= 125 mg or 0.1258 .19 = looong So mole of diphenylactyline = 0.125g 7.02810-4 mois 178.2g/mol ? mass of Tetrapherykcyclopentaci'enone 125 mg or 0.125 g so' mole of Tetrapheryl Cyclopentadienone 0.1259 -3.25x10-4 mol 384.5g/mol According to balance chemical Reaction 1 mol cliphenylacetylene React with 1 mole Tetraphenyl Cyclopentadienone. So 7:02x10-4 mol diphenylacetylene React with : 02/10 4 mas Tetreuphenyl Cyclopenta dienone But Here 3.25x10-4 more of Tetoaphenyl Cyclopentadienone is presenti Then limiting Reagent is - Tetraphenylcyclopentadienones so Reaction Procedure depend on Limiting Reactant- " .. 1 mol Tetoapheryl Cyclopenta dienone produce 1 mol Hexaphenye benzene. : 3.25X10*4 mol Tetrapheryl Cyclopenta dienone produce = 3-25X10-4 mol Hetaphenyl Benzenes so Amount of Hexaphenyl Benzene = 3:25X10 4 mole X 534.7910-1944 mol Amount of Metaphenyl Benzene = 174 mg_Angel

ou.8i- mass of diphenyl acetylene = 75.09 mass of Tetraphenylcyclopentadiene oruz75.0g Actual yielel of Hexa phenylbenzene -- 7500g so moles of diphenylacetylene = 750g $ 04208 mole. 73.29Xmas moles of teraphenyl Cyclopentadienone = 75.09 0:19 51 mole. 38 4.50gimas According to given Iph Ph Ph tot balance Reaction:- ph Ph ph Tyth 4 co phph ph .ph . Imole diphenyl acetylene React with I mole Tetraphenyl Cyclopenta de enene. So. 0.4208 dipheryl acetylene React with 0.4-203 mol Tetraphenyl Cyclopentendienone. But Here only 0.19 51 mole of Tetrap hanyl Cyclopentadienone is present. Soi limiting Reactant is Tetraphyl Cyclopentadienione I Then 0.1951 mol Tetouphenye Cyclopentadienone produce 0-1981 mole.Hexaphenylbenzene soAmount (Thoestical yield) of Hetaphenylbenzene = 0.1951 male. 53.4.7 g -104.329 y yield= Actual yield oo Thoerticelyield => 75.g vrou i mol 104329 : v yield = 71,89% Ans: