The balanced equation for the above reaction is as follows
P4 + 10Cl2 —> 4PCl5
P4 is the limiting reactant. Stoichiometry of P4 to PCl5 is 1:4
The mass of P4 reacted = 23.0 g
Number of P4 moles = 23.0 g/ 124 g/mol = 0.185 mol
According to the stoichiometry the number of PCl5 moles produced are 4 times the amount of P4 moles reacted
Therefore PCl5 moles = 0.185 x 4 = 0.74 mol
Answer:
Reaction is non-spontaneous when T > 738.5K and spontaneous when T < 738.5K
Explanation:
A reaction is non-spontaneous when ΔG° > 0 and is spontaneous when ΔG° < 0
ΔG° is defined as:
ΔG° = ΔH° - TΔS°
ΔG° will be > 0 (non-spontaneous) when ΔH° > TΔS° and vice versa. Thus:
-16100J > T × -21.8J/K
738.5K > T
That means the reaction is <em>non-spontaneous when T > 738.5K and spontaneous when T < 738.5K</em>
I hope it helps!
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Explanation:
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The atomic number represents the number of protons present in the nucleus of a certain atom. For a hydrogen atom, which has 1 proton, 1 electron, and 0 neutrons, the atomic number of hydrogen would be 1. The atomic number is the same as the charge number of a nucleus. This number is unique for every element in the periodic table and it distinguishes an element. In a neutral atom, this number is equal to the number of electrons in the atom. Also, the atomic number of an element determines the position of the element in the periodic table which for hydrogen, it is the very first element in the periodic table.
