Short Answer TypeOut of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.
What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy 1/3rd of tetrahedral voids?
What is meant by positive deviations from Raoult's law? Give an example. What is the sign of mixH for positive deviation?
OR
Define azeotropes. What type of azeotrope is formed by positive deviation from Raoult's law? Give an example.
Following reactions occur at cathode during the electrolysis of aqueous silver chloride solution:
Ag+ (aq) + e- → Ag(s) E° = +0.80 V
H+ (aq) + e- → 1/2 H2 (g) E° = 0.00 V
On the basis of their standard reduction electrode potential (E°) values, which reaction is feasible at the cathode and why?
Define limiting molar conductivity. Why conductivity of an electrolyte solution decreases with the decrease in concentration?
What are the transition elements? Write two characteristics of the transition elements ?
Elements that possess incompletely filled d-orbitals either in their ground state or in any of their oxidation states are known as transition elements. The name transition element given to the elements of d-block is only because of their position between s-block and p-block elements.
Characteristics of transition elements are as follows:
1. They show paramagnetic behaviour.
2. They show variable oxidation states.
3. They exhibit catalytic properties.
4. They generally form complex compounds.
5. They generally form coloured compounds.
Write down the IUPAC name of the following complex:
[Cr(NH3)2Cl2(en)]Cl (en = ethylenediamine)
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