wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In an iodometric estimation, the following reactions occur
2Cu2++4ICu2I2+I2;I2+2Na2S2O32NaI+Na2S4O6
0.12 mole of CuSO4 was added to excess of KI solution and the liberated iodine required 120 mL of hypo. The molarity of hypo solution was:

A
2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
0.1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1.0
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 1.0
2Cu+2+4ICu2I2+I2
I2+2Na2S2O32NaI+Na2S4O6
Moles of pure CuSO4=0.12 moles of Na2S2O3 reacted with I2
Moles of Na2S2O3=120×103×M=0.12

flag
Suggest Corrections
thumbs-up
2
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Lanthanoids
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon