Notifications
Clear all
0
21/09/2020 11:37 am
Topic starter
The average molar mass of chlorine is 35.5 g mol–1. The ratio of 35Cl to 37Cl in naturally occurring chlorine is close to:
(1) 3 : 1
(2) 4 : 1
(3) 2 : 1
(4) 1 : 1
1 Answer
0
21/09/2020 11:40 am
(1) 3 : 1
Explanation:
35Cl 37Cl
Molar ratio x 1 – x
Mavg. = 35 × x + 37(1 – x) = 35.5
35x + 37 – 37x = 35.5
2x = 1.5
x = 3/4
So, ratio of 35Cl : 37Cl = 3 : 1