Which of the following electrolytes will have the maximum coagulating value for Fe 2 O 3 ⋅ x H 2 O / OH - sol?

Question

Which of the following electrolytes will have the maximum coagulating value for Fe 2 O 3 ⋅ x H 2 O / OH - sol? (A) MgSO 4 (B) Al 2( SO 4)3 (C) NaCl (D) BaSO 4

Tardigrade Admin · Accepted Answer

Fe 2 O 3 ⋅ x H 2 O / OH -sol Negatively charged colloids MgSO 4 longrightarrow Mg 2+ Al 2( SO 4)3 longrightarrow Al 3+ NaCl longrightarrow Na + BaSO 4 longrightarrow Ba 2+ Order of coagulation power Al 3+> Mg 2+= Ba 2+> Na +

Q. Which of the following electrolytes will have the maximum coagulating value for $F e_{2} O_{3} \cdot x H_{2} O / O H^{-}$ sol?

$M g S O_{4}$

$A l_{2} (S O_{4})_{3}$

$N a Cl$

$B a S O_{4}$

$F e_{2} O_{3} \cdot x H_{2} O / O H^{-}$ sol
Negatively charged colloids
$M g S O_{4} ⟶ M g^{2 +}$
$A l_{2} (S O_{4})_{3} ⟶ A l^{3 +}$
$N a Cl ⟶ N a^{+}$
$B a S O_{4} ⟶ B a^{2 +}$
Order of coagulation power
$A l^{3 +} > M g^{2 +} = B a^{2 +} > N a^{+}$

Q. Which of the following electrolytes will have the maximum coagulating value for Fe2​O3​⋅xH2​O/OH− sol?

MgSO4​

Al2​(SO4​)3​

NaCl

BaSO4​