Out of BaCl2 and KC1, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason. [Delhi 2015]

Out of BaCl2 and KC1, which one is more effective in causing coagulati

1.	Out of BaCl2 and KC1, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason. [Delhi 2015]
Answer» BACL2 is the right answer. Explanation:According to HARDY SCHULTZ RULE, HIGHER the VALENCE of coagulating ion, higher is its coagulation power. Ba2+ > K+ - Order of coagulation power