
Which of the following cations has the highest hydration energy?
A)
B)
C)
D)
Answer
479.1k+ views
Hint: Hydration means the interaction of ions with water. The energy required for hydrating one mole of an ion is known as the hydration energy also known as hydration enthalpy. Hydration energy or enthalpy depends on the charge density of the ions.
Complete answer:
Hydration energy is the energy released or taken up when one mole of ion reacts with water i.e. undergo hydration. The general equation for this reaction can be given as follows.
Here, we have M as an ion and it can be in either solid or gaseous state. Hydration energy also explains the solubility of a compound or an ion in water. When a compound is mixed with water, the lattice bonds between the compound break and they get separated as ions. These ions are surrounded by water molecules.
Hence, we can understand that if the hydration energy is equal or greater than the lattice energy, then the compound will be soluble in water. If the hydration energy is less than lattice energy then the compound is insoluble in water.
Given to us are four ions with different charges on them. We can establish a relationship between hydration energy and the charge present on the ions since we know that the hydration energy is dependent on the charge density.
Therefore, hydration energy is directly proportional to the charge on the ions. Among the given ions, has the highest charge. This means that it would have the highest hydration energy.
Therefore, the correct answer is option C.
Note: It is to be noted that the hydration energy or hydration enthalpy also depends on the size of the ion. The hydration energy is inversely proportional to the size of the ion which means that ions that are smaller in size have higher hydration energies.
Complete answer:
Hydration energy is the energy released or taken up when one mole of ion reacts with water i.e. undergo hydration. The general equation for this reaction can be given as follows.
Here, we have M as an ion and it can be in either solid or gaseous state. Hydration energy also explains the solubility of a compound or an ion in water. When a compound is mixed with water, the lattice bonds between the compound break and they get separated as ions. These ions are surrounded by water molecules.
Hence, we can understand that if the hydration energy is equal or greater than the lattice energy, then the compound will be soluble in water. If the hydration energy is less than lattice energy then the compound is insoluble in water.
Given to us are four ions with different charges on them. We can establish a relationship between hydration energy and the charge present on the ions since we know that the hydration energy is dependent on the charge density.
Therefore, hydration energy is directly proportional to the charge on the ions. Among the given ions,
Therefore, the correct answer is option C.
Note: It is to be noted that the hydration energy or hydration enthalpy also depends on the size of the ion. The hydration energy is inversely proportional to the size of the ion which means that ions that are smaller in size have higher hydration energies.
Recently Updated Pages
Earth rotates from West to east ATrue BFalse class 6 social science CBSE

The easternmost longitude of India is A 97circ 25E class 6 social science CBSE

Write the given sentence in the passive voice Ann cant class 6 CBSE

Convert 1 foot into meters A030 meter B03048 meter-class-6-maths-CBSE

What is the LCM of 30 and 40 class 6 maths CBSE

What is history A The science that tries to understand class 6 social science CBSE

Trending doubts
Father of Indian ecology is a Prof R Misra b GS Puri class 12 biology CBSE

Who is considered as the Father of Ecology in India class 12 biology CBSE

Enzymes with heme as prosthetic group are a Catalase class 12 biology CBSE

A deep narrow valley with steep sides formed as a result class 12 biology CBSE

An example of ex situ conservation is a Sacred grove class 12 biology CBSE

Why is insulin not administered orally to a diabetic class 12 biology CBSE
