Question

18. How many grams of PC13, are produced from 93.0 g of
Pe and 213 g of C1,? Rcaction is 80% officiont
(A) 200 g
(B) 220 g
(C) 240 g
(D) 260 g​

Answer 1

Answer:

(B) 220g

Explanation:

p + 3cl = pcl3

1:3:1

P= 31u

93g = 3 mol P

35.5= 1mol cl

71=2mol cl

213= 2*3molcl= 6mol cl

= 2mol 3cl

3P + 6cl are there

chlorine will react with 2P, 1 P is left.

2PCl3 will be formed in 100% efficient reaction.

8/5 Pcl3 will be formed in 80% reaction.

8/5(31+106.5) = mass of pcl3 = 220g of Pcl3.

therefore option (B) is right 220g.