If all Fe2+ ions are replaced by Sr4+ ions in 0.1 mole of Fe0.9O, then the number of vacancies created are-
Answers
Answered by
3
Answer:
let the no of fe2+ =x
no of fe3+ = 0.9-x
2x +3(0.9-x)=+2
2x +2.7-3x=+2
-x= -0.7= x = 0.7
no of fe2+ =0.7
no of fe3+= 0.9-0.7=0.2
1 molecule of fe0.9o1.00 has fe2+ = 0.7×0.1xNa=0.07×NA
no,2fe+ substitute sr4+ = 1
0.07×NA substitute sr4+ = 1/2×0.07×NA sr4+
1sr4+ creates, cation vacancy = 1
0.07/2×NA sr4+ creates, cation vacancy
= 0.070/2×NA = 0.035×NA
Similar questions