Under the influence of an electric field the particles in a sol migrate towards cathode. The coagulation of the same sol is studied using NaCl , Na2SO4 and Na3PO4 solutions. Their coagulation values will be in maximum for
A
NaCl
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Na2SO4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Na3PO4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Same for all.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is BNaCl The sol particles migrate towards cathode. So they are positively charges. Hence, anions would be effective in coagulation. Greater is the valence of effective ion, smaller will be its coagulating value.