Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an atom.) What name is given to the energy for the reaction? Hint: note the process depicted does not correspond to electron affinity E + ( g ) + e − → E ( g )
Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an atom.) What name is given to the energy for the reaction? Hint: note the process depicted does not correspond to electron affinity E + ( g ) + e − → E ( g )
Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an atom.) What name is given to the energy for the reaction? Hint: note the process depicted does not correspond to electron affinity
E
+
(
g
)
+
e
−
→
E
(
g
)
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
82.Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an atom.) What name is given to the energy for the reaction? Hint: Note the process depicted does not correspond to electron affinity.)
E+(?)+e−⟶E(?)E+(g)+e−⟶E(g)
Which of the following reactions represents an electron gain energy that would be positive (i.e. endothermic).
S(g) → S+(g) + e-
Cl(g) → Cl+(g) + e-
Kr(g) + e- → Kr-(g)
S(g) + e- → S-(g)
Kr(g) → Kr+(g)+ e-
Cl(g) + e- →Cl-(g)
(ii) Draw the Born-Haber cycle and use the data below for the formation of calcium chloride, to
calculate the electron affinity of chlorine:
Ca(s)
→ Ca(g)
AHat = +190 kJ/mol
Ca(g)
> Caz*(g) + 2e¨ AH¡ɛ = +1730 kJ/mol
Cl2{g)
2C1(g)
AHat = +121 kJ/mol
Caz (g) + 2Cl(g)
> CaCl2(s)
AHLE = -2184 kJ/mol
Ca(s) + Cl2(g) –> CaCl2(s) AH; = -795 kJ/mol
General Chemistry: Principles and Modern Applications (11th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Lanthanoids and its Position in Periodic Table - D and F Block Elements - Chemistry Class 12; Author: Ekeeda;https://www.youtube.com/watch?v=ZM04kRxm6tY;License: Standard YouTube License, CC-BY