How many pairs of electrons are shared between the nitrogen atoms in a molecule of n2?
1 answer:
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Answer : The values of are
respectively.
Explanation :
The given balanced chemical reaction is,
First we have to calculate the enthalpy of reaction .
where,
= enthalpy of reaction = ?
n = number of moles
= standard enthalpy of formation of gaseous benzene = 82.93 kJ/mol
= standard enthalpy of formation of liquid benzene = 49.04 kJ/mol
Now put all the given values in this expression, we get:
Now we have to calculate the entropy of reaction .
where,
= entropy of reaction = ?
n = number of moles
= standard entropy of formation of gaseous benzene = 269.2 J/K.mol
= standard entropy of formation of liquid benzene = 173.26 J/K.mol
Now put all the given values in this expression, we get:
Now we have to calculate the Gibbs free energy of reaction .
As we know that,
At room temperature, the temperature is .
Therefore, the values of are
respectively.
Answer:
The mass of zinc sulfide produced is
Explanation:
From the question we are told that
The mass of zinc is
The mass of sulfur is
The molar mass of is a constant with value 65.39 g /mol
The molar mass of is a constant with value 32.01 g/mol
The molar mass of is a constant with value 97.46 g/mol
The reaction is
So from the reaction
1 mole of react with 1 mole of
to produce 1 mole of
This implies that
65.39 g /mol of react with 32.01 g/mol of
to produce 97.46 g/mol of
From the values given we can deduce that the limiting reactant is sulfur cause of the smaller mass
So
0.250 g of react with 0.250 of
to produce
of
So
Thus the mass of the mass of zinc sulfide produced is