According to the reaction equation:
PbCrO4 ↔ Pb2+ + CrO42-
so, when the Ksp expression = [Pb2+] [CrO42-]
when the Ksp =2.8 x 10^-13
when the solubility is the amount of solute that dissolved in a unit volume of a solvent so, we can assume solubility = X
by substitution on Ksp expression:
∴2.8 x 10^-13 = X*X
∴X = √(2.8 x 10^-13)
= 5.29 x 10^-7 M
∴ the solubility = X = 5.29 x 10^-7
Answer : The correct option is, (D) it is oxidized.
Explanation :
On the basis of electrons, there are two types of reactions :
(1) Oxidation reaction (2) Reduction reaction
Oxidation reaction : When an element loses electrons in a chemical reaction then that element gets oxidized in the chemical reaction and its oxidation number increases.
Reduction reaction : When an element gains electrons in a chemical reaction then that element gets reduced in the chemical reaction and its oxidation number decreases.
Hence, the correct answer is (D).
Each description is dragged into the most appropriate bin.
Answer:
The zebra mussel is a small freshwater mussel.
A flow of positive charges gives the same electric current, and has the same effect in a circuit, as an equal flow of negative charges in the opposite direction.
Since current can be the flow of either positive or negative charges, or both, a convention for the direction of current which is independent of the type of charge carriers is needed. The direction of conventional current is defined arbitrarily to be the direction of the flow of positive charges. So the Answer is Electric Circuits