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On which of the following properties does the coagulating power of an ion depend?

Both magnitude and sign of the charge on the ion
Size of the ion alone
The magnitude of the charge on the ion alone
The sign of charge on the ion alone
Explanation:

• Coagulation of colloidal solution by using an electrolyte depends on the charge present (positive or negative) on colloidal particles as well as on its size.
• Coagulating power of an electrolyte depends on the magnitude of charge present on effective ion of electrolyte.
Additional Questions

Given van der Waals constant for $NH_3, H_2, O_2$ and $CO_2$ are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?

Answer

The solubility of $BaSO_4$ in water is 2.42 × $10^{–3} gL^{–1}$ at 298 K. The value of its solubility product $(K_{sp})$ will be
(Given molar mass of $BaSO_4 = 233 g mol–1)$

Answer

In which case is number of molecules of water maximum?

Answer

The correct difference between first and second order reactions is that

Answer

Among $CaH_2, BeH_2 , BaH_2,$ the order of ionic character is

Answer

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below :

Then the species undergoing disproportionation is

Answer

For the redox reaction
$MnO_4^-+C_2O_4^{2-}+H^+\rightarrow Mn^{2+} +CO_2 + H_2O$
The correct coefficients of the reactants for the balanced equation are
$MnO_4^-$ $C_2O_4^{2-}$ $H^+$

Answer

Which one of the following conditions will favour maximum formation of the product in the reaction,
$A_2(g)+B_2(g)\rightleftharpoons X_2(g)\triangle_r H=-XKJ?$

Answer

When initial concentration of the reactant is doubled, the half-life period of a zero order reaction

Answer

The bond dissociation energies of $X_2 , Y_ 2$ and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is –200 kJ $mol^{–1}$. The bond dissociation energy of $X_2$ will be

Answer
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