AP 화학(Chemistry) 2019년도 FRQ 2번 해설 입니다

1번에 목소리가 너무 작아서 이번에 많이 키웠습니다.

(A) I2 because its the biggest out of the 4, meaning that it has the smallest electrostatic forces between the nuclei and the electrons, and most electron repulsion between the atoms.

(B) b. 2 Br-(aq) + Cl2(g) -> Br2(g) + 2 Cl-(aq)

Ecell = 1. 36 v – 1. 07 v

Ecell = 0. 29v

c. Br2 has LDFs and BrCl has dipole-dipole interactions and LDFs. Br2 has much greater LDFs than BrCl so it has more IMFs

d. pv = nrt / p = 1. 22 atm

e. Keq= [Br2][Cl2]/[BrCl]^2

f. 0. 131

G. 217. 2