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Questions and Answers
What is the correct equilibrium constant expression for the reaction C(s) + CO2(g) ⇌ 2CO(g)?
What is the correct equilibrium constant expression for the reaction C(s) + CO2(g) ⇌ 2CO(g)?
- (1-x)/(2x)^2
- (1+x)/(2x)^2
- (2x)/(1-x)^2 (correct)
- (2x)/(1+x)^2
What is Le-Chatelier's principle?
What is Le-Chatelier's principle?
- A system in equilibrium readjusts itself to counteract the effect of the change (correct)
- A system in equilibrium gets disturbed when concentration, temperature or pressure is changed
- The equilibrium constant remains constant even if the concentration, temperature or pressure is changed
- A change in concentration, temperature or pressure has no effect on the system
For a reaction in which the number of moles of products is greater than that of reactants, what is the effect of increasing pressure on the system?
For a reaction in which the number of moles of products is greater than that of reactants, what is the effect of increasing pressure on the system?
- Reaction becomes irreversible
- Equilibrium shifts towards the reactants (correct)
- No effect on the equilibrium
- Equilibrium shifts towards the products
What happens to the equilibrium when a system is subjected to a change in concentration, temperature or pressure?
What happens to the equilibrium when a system is subjected to a change in concentration, temperature or pressure?
What is the significance of Le-Chatelier's principle?
What is the significance of Le-Chatelier's principle?
What happens to the melting point of sulphur at higher pressure?
What happens to the melting point of sulphur at higher pressure?
What is the effect of high temperature on the solubility of NH4Cl?
What is the effect of high temperature on the solubility of NH4Cl?
What happens to the boiling point of water at higher pressure?
What happens to the boiling point of water at higher pressure?
What is the effect of an increase in temperature on the solubility of CaCl2?
What is the effect of an increase in temperature on the solubility of CaCl2?
What is the purpose of flash evaporation in concentrating certain aqueous solutions?
What is the purpose of flash evaporation in concentrating certain aqueous solutions?
What happens to the volume when sulphur melts?
What happens to the volume when sulphur melts?
What is the effect of increasing the pressure in the reaction: 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
What is the effect of increasing the pressure in the reaction: 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
In the reaction N2 + 3H2 ⇌ 2 NH3 + 22 kcal, what will be the effect of increasing the temperature?
In the reaction N2 + 3H2 ⇌ 2 NH3 + 22 kcal, what will be the effect of increasing the temperature?
In the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal, what will be the effect of adding more PCl5?
In the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal, what will be the effect of adding more PCl5?
In the reaction Ice ⇌ Water - x kcal, what will be the effect of increasing the pressure?
In the reaction Ice ⇌ Water - x kcal, what will be the effect of increasing the pressure?
What is the significance of Le-Chatelier's principle in chemical and physical systems?
What is the significance of Le-Chatelier's principle in chemical and physical systems?
In the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal, what will be the effect of increasing the volume of the container?
In the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal, what will be the effect of increasing the volume of the container?
If a system is in equilibrium and the concentration of one of the reactants is increased, what will happen to the equilibrium?
If a system is in equilibrium and the concentration of one of the reactants is increased, what will happen to the equilibrium?
What is the significance of the value of 'a' in the equilibrium constant expression?
What is the significance of the value of 'a' in the equilibrium constant expression?
A system is in equilibrium and the pressure is increased. What will happen to the equilibrium?
A system is in equilibrium and the pressure is increased. What will happen to the equilibrium?
What is the purpose of Le-Chatelier's principle?
What is the purpose of Le-Chatelier's principle?
For a reaction in which the number of moles of products is less than that of reactants, what is the effect of increasing pressure on the system?
For a reaction in which the number of moles of products is less than that of reactants, what is the effect of increasing pressure on the system?
What is the correct equilibrium constant expression for the reaction NH4HS(s) ⇌ NH3(g) + H2S(g)?
What is the correct equilibrium constant expression for the reaction NH4HS(s) ⇌ NH3(g) + H2S(g)?
What is the effect of increasing the pressure on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = -ve?
What is the effect of increasing the pressure on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = -ve?
What is the effect of increasing the concentration of C and/or D on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = 0?
What is the effect of increasing the concentration of C and/or D on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = 0?
What is the effect of adding a catalyst to the equilibrium position of the reaction A + B ⇌ C + D?
What is the effect of adding a catalyst to the equilibrium position of the reaction A + B ⇌ C + D?
What is the effect of increasing the temperature on the equilibrium constant of the reaction 2SO2 + O2 ⇌ 2SO3 + 45 kcal, where ΔH = -ve?
What is the effect of increasing the temperature on the equilibrium constant of the reaction 2SO2 + O2 ⇌ 2SO3 + 45 kcal, where ΔH = -ve?
What is the effect of increasing the pressure on the equilibrium position of the reaction 2NO ⇌ N2 + O2, where Δn = 0?
What is the effect of increasing the pressure on the equilibrium position of the reaction 2NO ⇌ N2 + O2, where Δn = 0?
What is the effect of increasing the concentration of A and/or B on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = +ve?
What is the effect of increasing the concentration of A and/or B on the equilibrium position of the reaction A + B ⇌ C + D, where Δn = (c + d) - (a + b) = +ve?
What is the effect of increasing the pressure on the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
What is the effect of increasing the pressure on the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
In the reaction N2 + 3H2 ⇌ 2 NH3 + 23 kcal, what will be the effect of adding more N2?
In the reaction N2 + 3H2 ⇌ 2 NH3 + 23 kcal, what will be the effect of adding more N2?
What is the effect of increasing the temperature on the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal?
What is the effect of increasing the temperature on the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal?
In the Ice ⇌ Water - x kcal reaction, what will be the effect of increasing the pressure?
In the Ice ⇌ Water - x kcal reaction, what will be the effect of increasing the pressure?
What is the effect of increasing the volume of the container on the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
What is the effect of increasing the volume of the container on the reaction 2 NO + O2 ⇌ 2 NO2 + 27.8 kcal?
What is the effect of adding more PCl5 on the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal?
What is the effect of adding more PCl5 on the reaction PCl5 ⇌ PCl3 + Cl2 - 15 kcal?
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