effect of pressure on the melting point of ice in le chatlier principal
Answers
Answer:
Since liquid water occupies less volume than the same mass of ice, the system pressure will decrease. We conclude that the pressure at which ice and water are at equilibrium decreases when the temperature increases. That is, the melting point increases as the pressure decreases.
Answer:
Effect of pressure on the melting point of ice Ice ⇔ liquid water The ice occupy the more volume than liquid water, so increased pressure will result in melting of ice according to Le-Chatelier principle. Favourable conditions for some chemical equilibria to get higher yield of product
Explanation:
place.
Types of Chemical Reactions
1. Combination Reactions
In such reactions two or more substances combine to form a single compound.
e.g.,
2Mg + O2 → 2MgO
2. Decomposition Reactions
In these reactions. a compound decomposes to produce two or more different substances.
e.g., PCI5 ⇔ PCI3 + CI2
Digestion of food is also a decomposition reaction.
[Decomposition by heat IS called thermal decomposition and decomposition by sunlight is called photo decomposition.]
3. Displacement Reactions
These reactions involve displacement of one element or group by another. These are infact, redox reactions, e.g.,
Zn(s) + H2SO4
4. Double Displacement or Metathesis Reactions
In these. reactions two compounds react to form two new compounds and no change in oxidation state take place, e.g., precipitation reactions, neutralisation, reactions.
AgNO3(aq) + NaCI(aq) → → AgCl(s) + NaNO3(aq)
Equilibrium State
Under given set of conditions if a reversible process or chemical reaction is carried out in a closed container, a constancy in some observable properties like colour intensity, pressure, density, is observed. Such a state is referred to as an equilibrium state.
Equilibrium may be classified as :
Physical Equilibrium
Equilibrium set up in physical processes like evaporation of water, melting of solids, dissolution of solutes, etc., is called physical equilibrium, e.g., Ice ⇔ Water
At equilibrium,
Rate of melting of ice = Rate of freezing of water
Chemical Equilibrium
If a reversible reaction is carried out in a closed vessel, a stage is attained where the speed of the forward reaction equals the speed of the backward reaction. It corresponds to chemical equilibrium. At equilibrium,
Rate of forward reaction = Rate of backward reaction