What is the chemical name of the compound represented by the formula Ni2O3? Use the list of polyatomic ions and the periodic tab
2 answers:
Answer : The chemical name of the compound is, nickel(III)oxide.
Explanation :
The rules for naming the chemical name of the compound :
- First element in the formula is named first and keep its element name.
- Gets a prefix if there is a subscript on it.
- Written the oxidation state by the us of roman numeral.
- Second element is named second.
- Use the root of the element name plus suffix (-ide).
- Always use a prefix on the second element.
In the given compound, the nickel is the cation and first element in the formula and the oxidation state of nickel is, (+3). The second element is oxygen which is named as oxide.
Thus, the chemical name of the compound is, nickel(III)oxide.
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Answer : The value of for this reaction is,
Explanation :
The given chemical reaction is:
Now we have to calculate value of .
where,
= Gibbs free energy of reaction = ?
n = number of moles
= -389.8 kJ/mol
= -161.96 kJ/mol
= -137.2 kJ/mol
Now put all the given values in this expression, we get:
The relation between the equilibrium constant and standard Gibbs, free energy is:
where,
= standard Gibbs, free energy = -89.4 kJ/mol = -89400 J/mol
R = gas constant = 8.314 J/L.atm
T = temperature =
= equilibrium constant = ?
Now put all the given values in this expression, we get:
Thus, the value of for this reaction is,