Back to Directory
neet CHEMISTRYMedium

Given below are two statements Statement I: In the coagulation of a negative sol, the flocculating power of the three given ions is in the order Al3+>Ba2+>Na+Al^{3+} > Ba^{2+} > Na^+ Statement II: In the coagulation of a positive sol, the flocculating power of the three given salts is in the order NaCl<Na2SO4<Na3PO4NaCl < Na_2SO_4 < Na_3PO_4 In the light of the above statements, choose the most appropriate answer from the options given below

A

Statement I is correct but Statement II is incorrect

B

Statement I is incorrect but Statement II is correct

C

Both Statement I and Statement II are correct

D

Both Statement I and Statement II are incorrect

Step-by-Step Solution

According to the Hardy-Schulze rule, the flocculating power of an ion increases with the increase in the magnitude of the charge on the ion. For a negatively charged colloid, the flocculating power of cations follows the order Al3+>Ba2+>Na+Al^{3+} > Ba^{2+} > Na^+. For a positively charged colloid, the flocculating power of anions follows the order of their valency, which is Cl−<SO42−<PO43−Cl^- < SO_4^{2-} < PO_4^{3-}, hence the order of salts is NaCl<Na2SO4<Na3PO4NaCl < Na_2SO_4 < Na_3PO_4. Both statements are correct.

Practice Mode Available

Master this Topic on Sushrut

Join thousands of students and practice with AI-generated mock tests.

Get Started