Which compound contains both ionic and covalent
2 answers:
Answer: The correct answer is option (A).
Explanation:
Covalent bonds are those bonds in which sharing of an electrons is present in between the two atoms. Generally this type of bonding is found when electro-negativity difference between is very less or zero.
Ionic bonds are those bonds in which complete transfer of an electrons from one atom to another atom is present.Generally this type of bonding is found when electro-negativity difference between two atoms is very large.
Compound contains both ionic and covalent bonds.
- Bond between carbon and oxygen atoms in carbonate ion is a covalent bond. Being a ploy-atomic ion it carries 2- charge.
- Calcium ion being 2+ charge will form ionic bond with carbonate ion.
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The equilibrium constant is 0.0022.
Explanation:
The values given in the problem is
ΔG° = 1.22 ×10⁵ J/mol
T = 2400 K.
R = 8.314 J mol⁻¹ K⁻¹
The Gibbs free energy should be minimum for a spontaneous reaction and equilibrium state of any reaction is spontaneous reaction. So on simplification, the thermodynamic properties of the equilibrium constant can be obtained as related to Gibbs free energy change at constant temperature.
The relation between Gibbs free energy change with equilibrium constant is ΔG° = -RT ln K
So, here K is the equilibrium constant. Now, substitute all the given values in the corresponding parameters of the above equation.
We get,
So, the equilibrium constant is 0.0022.