For sol P the coagulation values (mmol per litre) are NaCl 52, BaCl2 0.69, AlCl3 0.093. For sol Q they are NaCl 120, Na2SO4 4.4, Na3PO4 0.11. Select the correct statements.

For sol Q, Na3PO4 has a greater coagulating power than Na2SO4

For sol P, the chloride ion of AlCl3 is the coagulating ion

For sol Q, Na3PO4 has a greater coagulating power than Na2SO4

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3sc152

For sol P the coagulation values (mmol per litre) are $NaCl$ 52, $BaCl X_{2}$ 0.69, $AlCl X_{3}$ 0.093. For sol Q they are $NaCl$ 120, $Na X_{2} SO X_{4}$ 4.4, $Na X_{3} PO X_{4}$ 0.11. Select the correct statements.

ASol P is negatively charged
BFor sol P, the chloride ion of $AlCl X_{3}$ is the coagulating ion
CSol Q is positively charged
DFor sol Q, $Na X_{3} PO X_{4}$ has a greater coagulating power than $Na X_{2} SO X_{4}$

For P the power rises with cation valence (

Na X^{+}

Ba X^{2 +}

Al X^{3 +}

), so P is negative and the cation, not chloride, coagulates it. For Q the power rises with anion valence (

Cl X^{-}

SO X_{4} X^{2 -}

PO X_{4} X^{3 -}

), so Q is positive. Lower coagulation value means higher power, so

Na X_{3} PO X_{4}

with 0.11 beats

Na X_{2} SO X_{4}

with 4.4.