Question

What is the proton affinity of
PH3 using Born Haber's cycle using
Hess's law of constant heat
summation ?
Given : dHf(PH3)o=-2 k), Bond
dissociation energy of H2=+20k],
Ionisation energy of H=10k), Bond
dissociation energy of chlorine
molecule = +8kJElectron gain
enthalpy of C1=-4k],
Lattice enthalpy of PH4C1=-28k)
PH3+12 H2+12C12(9) — PH401(s);
A Hro=- 8 kJ​

Answer 1

Explanation:

What is the product of a number of factors of 16 and the largest prime factor is 42?

A. 35

B. 25

C. 30

D. 42

E. 28

Answer 2

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