What is chemical equilibrium Mcq?
MCQs on Chemical Equilibrium In a state of chemical equilibrium, the concentration of reactants and products doesn’t change with time and there is no observable change in the system. In a dynamic equilibrium state, the rate of the forward reaction is equal to the rate of backward reaction.
What is an equilibrium state Mcq?
The state of a system in which properties are definite as long as external conditions are unchanged is called an equilibrium state.
What is unit of KP for the reaction?
atm−2. C.
Is KC affected by volume?
Kc and Kp are. constants for a reaction. They dont get affected by changing volume or pressure.
Why is equilibrium called a dynamic state?
Why is equilibrium called a dynamic state? Chemists try to convert as much reactants as possible into products. The reactions at equilibrium continue to take place once equilibrium is established. The products of a forward reaction are favored, so equilibrium lies to the right.
What is a KC value?
equilibrium constant: Kc = The equilibrium constant, Kc, is the ratio of the equilibrium concentrations of products over the equilibrium concentrations of reactants each raised to the power of their stoichiometric coefficients.
Why is KC affected by temperature?
If the reaction is exothermic, increasing the temperature will reduce Kc and vice-verca. This is because if you increase the temp., you drive the equilibrium backwards (in the endothermic direction), and therefore increase the concentration of reactants and decrease the concentration of products.
Is heat and work mutually convertible?
Explanation: First law of thermodynamics: First law of thermodynamics states that, Heat and mechanical work are mutually convertible. According to this law, a definite amount of mechanical work is needed to produce a definite amount of heat and vice versa.
What is the relationship between Kp and KC?
Relationship between Kp and Kc is Kp = Kc(RT)^Δn .
Does temperature affect equilibrium?
if the temperature is increased, the position of equilibrium moves in the direction of the endothermic reaction. if the temperature is reduced, the position of equilibrium moves in the direction of the exothermic reaction.
Why does pressure not affect KC?
The equilibrium constant, Kc is the ratio of the rate constants, so only variables that affect the rate constants can affect Kc. Pressure doesn’t show in any of these relationships.
Can the equilibrium constant be zero?
Answer and Explanation: The equilibrium constant cannot be 0. This is because this implies that the concentration of products is equal to 0 at equilibrium.
Does KC increase with pressure?
Changing the pressure can’t make any difference to the Kp expression. The position of equilibrium doesn’t need to move to keep Kp constant. Equilibrium constants are changed if you change the temperature of the system. Kc or Kp are constant at constant temperature, but they vary as the temperature changes.
What is superheat formula?
The total superheat calculation is as follows: Degrees compressor in temperature (50 degrees) minus saturation temperature (23 degrees) equals total superheat (27 degrees).
What is superheated air?
When an air conditioning system cools air, sensible heat has been removed. In fact, since the air is a gas or vapor and is heated far above its boiling (saturation) point, it is superheated air.
What is the value of equilibrium constant for a particular reaction?
The value of equilibrium constant for a particular reaction is constant under all conditions of temperature and pressure. The unit of K C for the reaction. H 2 O ( l ) H 2 O (g) are mol L -1 In the reaction CaCO 3 (s) CaO (s) + CO 2 (g). [CaCO 3] = [CaO] = 1 K P is always greater than K c for a particular reaction.
What are chemical equilibrium MCQs and how can they help you?
These Chemical Equilibrium MCQs will help you to prepare for any competitive exams like: NEET, AIIMS, JEE Mains, JEE Advance, IIT JEE, JIPMER and other Exams at all levels – you just have to practice regularly.
What is chemical equilibrium in chemistry?
Chemical Equilibrium is the most important and interesting chapter of Chemistry. So the practice set of Chemical Equilibrium with Important Questions And Answers helps students of class 11 and also for students studying for various competitive exams.
What is the equilibrium constant for the reaction 2H2S?
The equilibrium constant for the reaction 2H 2S ⇋ 2H 2(g) +S2(g) 2 H 2 S ⇋ 2 H 2 g + S 2 g at 1400 K will be