Chemistry
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New answer posted
a year agoContributor-Level 10
As the name signifies, a solid solution is one in which solvent is solid.So considering this aspect absorption of hydrogen over platinum or palladium is an example of such solution. Platinum or palladium is used as a catalyst in hydrogenation processes.
New question posted
a year agoNew answer posted
a year agoContributor-Level 10
A solution is a homogeneous mixture of two or more than two substances on molecular level whose composition can vary within certain limits.
The part or component of the mixture present in a lesser amount is called
the SOLUTE and the one present in larger amount is called the SOLVENT. For eg- small amount of salt [solute] dissolved in water [solvent].
There are nine types of solutions formed. They are:
Sr.No. |
State of solute |
State of solvent |
Examples |
1 |
GAS |
GAS |
Air |
2 |
GAS |
LIQUID |
Oxygen in water, carbonated water |
3 |
SOLID |
GAS |
Smoke particles in air, dust particles in air |
4 |
LIQUID |
GAS |
Mist |
5 |
LIQUID |
LIQUID |
Alcohol in water |
6 |
LIQUID |
SOLID |
Mercury in silver |
7 |
GAS |
SOLID |
Adsorption of hydrogen over palladium or platinum |
8 |
SOLID |
LIQUID |
Sugar in water |
9 |
SOLID |
SOLID |
Carbon in Iron(steel), Alloy |
Out of these nine types solution, solid in liquid, liquid in liquid & gas in liquid are very common. When the components of the solution are mixed, the resulting solution may exist in any of the three possible states of matter that is solid, liquid or gaseous. They are: (1) Gaseous solution: In such solutions solvent is Since the solvent is gas,the solute can be solid, liquid or gas. For example, a mixture of oxygen and nitrogen gas is a gaseous solution. (2) Liquid solution: In such type of solutions liquid acts as the solvent. The solute in these solutions may be gas, liquid, or solid. (3) Solid solutions: As the name suggests, in such solutions solid acts as the solvent. The solute in these solutions may be a gas, liquid or solid. For example, a solution of copper in gold is a solid solution. |
New answer posted
a year agoContributor-Level 10
The potential associated with each electrode is known as electrode potential. If the concentration of each species taking part in the electrode reaction is unity (if any gas appears in the electrode reaction, it is confined to 1 atmospheric pressure) and further there action is carried out at 298K, then the potential of each electrode is said to be the Standard Electrode Potential. By convention, the standard electrode potential (E? ) of hydrogen electrode is 0.00 volts. The electrode potential value for each electrode process is a measure of the relative tendency of the active species in the process to remainin the oxidised/reduced fo
New answer posted
a year agoContributor-Level 10
Two methods are used to balance chemical equations for redox processes. One of these methods is based on the change in the oxidation number of reducing agent and the oxidising agent (i.e. oxidation number method) and the other method is based on splitting the redox reaction into two half reactions — one involving oxidation and the other involving reduction (half reaction method). Both these methods are in use and the choice of their use rests with the individual using them.
New answer posted
a year agoContributor-Level 10
(a) Combination reactions (b) Decomposition reactions (c) displacement reactions (d) Disproportionation reactions.
New answer posted
a year agoContributor-Level 10
Electrochemical series is the series of elements in which elements are arranged in decreasing order of their reduction potential.
Reducing power goes on increasing whereas oxidising power goes on decreasing down the series.
New answer posted
a year agoContributor-Level 10
Electrochemical cell is a device in which the redox reaction is carried indirectly and the decrease in free energy appears as electrical energy.
At cathode there is gain of electrons.
At anode there is loss of electrons.
In electrochemical cell anode is written on L.H.S while cathode is written on R.H.S.
New answer posted
a year agoContributor-Level 10
(b) Oxidation involves gain of one or more electrons by a species during a reaction.
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