. A particular 100-octane aviation gasoline used


1.00 cm3 of tetraethyl lead (C2H5)4Pb of density 1.66g/cc, per litre of product. This compound is made as follows.

was How many gram of ethyl chloride is needed to make enough tetraethyl lead for 1 L of gasoline

A. 1.33g 

B. 2.66 g

C. 9.2g

D. 0.33g


 

Best Answer

Ans: A

Sol: The mass of 1 cc of (C2H5)4Pb is = 1 ´ 1.66 = 1.66g and this is the amount needed per litre.

No. of moles of (C2H5)4Pb needed = 1.66/323= 0.00514 ml

1 mole of (C2H5)4Pb requires 4 x (0.00514) = 0.0206 ml of C2H5Cl

Mass of C2H5 Cl = 0.0206 ´ 64.5 = 1.33 g

 

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