Molecular formula of starch can be represented as $$(C_{6}H_{10}O_{5})_{n}.$$ If the gold number of one such starch is 6.48 and $$0.01$$ millimoles of this starch is required to be added in $$10 ml$$ of red gold sol to just prevent coagulation by adding $$1 ml$$ of $$10$$% sodium chloride solution, then the value of '$$n$$' is
$$4$$
The coagulation values in millimoles per litre of the electrolytes used for the coagulation of $$As_2S_3$$ are given below: I. $$(NaCl) = 52$$ II. $$(BaCl_2) = 0.69$$ III. $$(MgSO_4) = 0.22$$ The correct order of their coagulating power is :
On which of the following properties does the coagulating power of an ion depend?
Blood is a colloidal solution of a __(i)__ substance. The styptic action of ___(ii)___ and __(iii)___ solution is due to __(iv)___ of blood forming a clot which stops further bleeding.
Under the influence of an electric field the particles in a sol migrate towards cathode. The coagulation of the same sol is studied using $$NaCl$$ , $$Na_2SO_4$$ and $$Na_3PO_4$$ solutions. Their coagulation values will be in maximum for
What is the correct sequence of the increasing coagulation value of the following electrolyte for the coagulation of ferric hydroxide solution ? (I) $$Na_3PO_4$$ (II) $$KCl$$ (III) $$K_{2}SO_{4}$$ (IV) $$ K_{4} [Fe(CN)_6] $$
Ferric hydroxide sol is positively charged colloid. The coagulating power of $$ NO^{-}_{3} $$,$$ SO^{2-}_{4} $$ and $$ PO^{3-}_{4} $$ ions would be in the order:
Which of the following electrolytes have maximum coagulating power?
Which of the following will have highest coagulating power for $$ AS_{2}S_{3} $$ colloid
For coagulating $$ As_{2}S_{3} $$ colloidal sol, which of the following will have lowest coagulation value
Colloidal solution of arsenious sulphide is coagulated by