Answer:
aA(g)+bB(g)⇌cC(g)+dD(g) then the equilibrium constant defined by the equation. Kc=[ C ]c[ D ]d[ A ]a[ B ]b. is found to be a constant quantity depending only on the temperature and the nature of the reaction. This general result is called the law of chemical equilibrium, or the law of mass action.
Explanation: Since kf and kr are constants, the ratio of kf divided by kr must also be a constant. This ratio is the equilibrium constant for the reaction, Kc. The ratio of the concentrations of the reactants and products is known as the equilibrium constant expression.
Answer:
Option c) The measurement of how much solute can be dissolved in a liter of solvent.
Explanation:
The concentration of a solution can be defined as the amount of solute in 1 litre of the solvent i.e how much of the solute that can dissolve in a litre of the solvent. Mathematically, it can be written as:
Concentration = mole of solute / Volume of solvent
Thus, the unit for the concentration is mole per litre (mol/L)
From the above illustration, we thus say that the concentration of a solution is a measure of how much solute can be dissolved in a liter of solvent.
Answer:
c) H2O and OH−
Explanation:
Acids are the species which furnish hydrogen ions in the solution or is capable of forming bonds with electron pair species as they are electron deficient species.
When an acid donates a proton, it changes into a base which is known as its conjugate base.
Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.
The acid and the base which is only differ by absence or presence of the proton are known as acid conjugate base pair.
Thus, for the reaction,

The base is
and the conjugate acid of the base is
.
Also, The base is
and the conjugate acid of the base is
.
<u>Correct option is :- c) H2O and OH−</u>
It should be 8 O atoms. 3O atoms in Na2S2O3 and 5O atom in 5H2O. The reason there are 5 O atoms are because the 5 in front of H2O means you multiply each atom in the compound by that number (like the distributive property). The H2 molecule becomes 10 Hydrogen atoms (5*2) and the Oxygen becomes 5 Oxygen atoms (5*1). Then you add the 5O atoms to the 3O atoms which equals 8