Answer:
The value of Q must be less than that of K.
Explanation:
The difference of K and Q can be understood with the help of an example as follows
A ⇄ B
In this reaction A is converted into B but after some A is converted , forward reaction stops At this point , let equilibrium concentration of B be [B] and let equilibrium concentration of A be [A]
In this case ratio of [B] and [A] that is
K = [B] / [A] which is called equilibrium constant.
But if we measure the concentration of A and B ,before equilibrium is reached , then the ratio of the concentration of A and B will be called Q. As reaction continues concentration of A increases and concentration of B decreases. Hence Q tends to be equal to K.
Q = [B] / [A] . It is clear that Q < K before equilibrium.
If Q < K , reaction will proceed towards equilibrium or forward reaction will
proceed .
Answer:
MIXTURE , ELEMENT AND SUBSTANCE
Answer:
Explanation:
The three of them increase from left to right across the periods of the periodic table, and at the same time, they decrease from up to down across the groups of the periodic table.
Ionization Energy is defined as the energy required to remove the atom of an electron.
Electron affinity is defined as the change in energy when electron is added to a negative ion.
Electronegativity is the ability of an atom to attract other atoms to itself.
Answer:
Explanation:
a. NaCl+ AgNO3-----> NaNO3+ AgCl
b. Số mol của NaCl= 0,2*0,5= 0,1 (mol)
------> Số mol của kết tủa AgCl tạo thành= 0,1 mol (dựa vào phương trình hóa học)
-----> Khối lượng của kết tủa AgCl tạo thành= 0,1*143,5=14,35(g)
c. Số mol của AgNO3= số mol của NaCl= 0,1 (mol)
------> Nồng độ mol của dd AgNO3 đã tham gia phản ứng= 
=0,25(M)
Answer:
The answer to your question is below
Explanation:
2)
1Na₂S + 1CaSO₄ ⇒ 1Na₂SO₄ + 1CaS
Reactans Elements Products
2 Na 2
2 S 2
1 Ca 1
4 O 4
3) 3LiNO₃ + 1Na₃PO₄ ⇒ 1Li₃PO₄ + 3NaNO₃
Reactants Elements Products
3 Li 3
3 N 3
13 O 13
3 Na 3
1 P 1
4) 1(NH₄)₂CO₃ + 1MgSO₄ ⇒ 1(NH₄)₂SO₄ + 1MgCO₃
Reactants Elements Products
2 N 2
8 H 8
1 C 1
7 O 7
1 Mg 1
1 S 1
5) 1Ca(OH)₂ + 1Na₂CO₃ ⇒ 2NaOH + 1CaCO₃
Reactants Elements Products
1 Ca 1
5 O 5
2 H 2
2 Na 2
1 C 1
