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(a) 0.1 mol of Lithium reacts with excess oxygen gas.
(i) Write a balanced chemical equation for the reaction.
(ii) Calculate the mass of the product formed.
[ Relative atomic mass : Lithium=7, Oxygen=16]
If an object has a mass of 243.8g and occupies a volume of 0.125 L, what will be the density of this object in g/cm³ ?
“If plum pudding model of atom would be valid, then producing cathode ray and electricity would be a myth”- justify these statement with scientific facts and logical approach in bullet points only.
For a reaction system at chemical equilibrium
the reaction is always shifted to the right if the concentration of right side species increases
the composition at equilibrium is not affected by catalysts
catalysts only affect speed to speed to get to equilibrium
the reaction is always shifted to the left if the concentration of right side species decreases
If Q is greater than K the reaction will shift to the right
if Q is greater than K nothing will happen
the composition at equilibrium is affected by catalysts
If Q is greater than K the reaction will shift to the left
the reaction is always shifted to the left if the concentration of right side species increases
the reaction is always shifted to the right if the concentration of right side species decreases
For a system at chemical equilibrium
the value of the equilibrium constant varies depending on which species are on which sides
the composition is dynamic
the value of the equilibrium constant is the same regardless of which species are on which sides
the equilibrium constants only depends on the left to right reaction
the composition is due to static forces
the equilibrium constant is composed of two rate constants
For a reaction system at chemical equilibrium that contains a gas
the total moles affect the value of Kp
the equilibrium constant must always be represented as Kp
the equilibrium constant must may be represented as Kc or Kp
the difference in moles between the two sides for all species affect the value of Kp
there is a mathematical relationship between Kp and Kc due to the combined gas law
the difference in moles between the two sides for all gas species affect the value of Kp
there is a mathematical relationship between Kp and Kc due to the ideal gas law
the equilibrium constant must always be represented as Kc
For a reaction system at chemical equilibrium
the reaction is always shifted to the left if the concentration of right side species increases
the composition at equilibrium is affected by catalysts
the reaction is always shifted to the left if the concentration of right side species decreases
If Q is greater than K the reaction will shift to the left
catalysts only affect the speed to get to equilibrium
the composition at equilibrium is not affected by catalysts
If Q is greater than K the reaction will shift to the right
the reaction is always shifted to the right if the concentration of right side species decreases
the reaction is always shifted to the right if the concentration of right side species increases
if Q is greater than K nothing will happen
For a reaction system at chemical equilibrium that contains a slightly insoluble salt
the coefficients are always one
sp stand for special precipitate
KSP always contain the concentration of water as a component
KSP always contain the concentration of a solid as a component
the reaction is always shifted to the towards the direction for formation of the solid if the concentration of cationic species increases
the reaction is always shifted to the towards the direction for formation of the solid if more solid is added to the system
the coefficients are not always one
sp stand for solubility product
For a reaction system at chemical equilibrium that contains a Bronsted-Lowry acid/base conjugate pair
Ka, Kb, and Kw all contain the concentration of water as a component
Ka and Kb are directly related
the reaction is always shifted to the right if the concentration of acid species decreases
the coefficients are not always one
the reaction direction favored is always shifted toward the side with the acidic form of the pair if a strong acid is added
the reaction direction favored is always shifted toward the side with the basic form of the pair if a strong acid is added
the coefficients are always one
Ka and Kb are inversely related
For a reaction system at chemical equilibrium that includes some, but not all, gaseous species
the reaction is always shifted to side with largest total moles of only gas species
the reaction is always shifted to the left if the pressure increases
the reaction is always shifted to side with fewest total moles of all species
the reaction is always shifted to side to reduce gaseous matter interactions
the reaction is always shifted due to molar mass of species due to a kinetic molecular theory postulate
the reaction is always shifted to side with smallest total moles of all species
the reaction is always shifted to side with smallest total moles of only gas species
the reaction is always shifted due to a kinetic molecular theory postulate to minimize repulsions
#331389 on Nov 2022