(I) (30 points) Multiple-Choice Questions 1) The coordination number of a central sphere in a unit cell is defined as the number of spheres of its nearest neighbors. What is the coordination number in a simple cubic cell? A) 2 B)4 C)6 D)8E)12 Answer: ( 2) The vapor pressure of liquid A is lower than that of liquid B at room temperature, also lower at 60°C. Which of the following statements concerning about the liquids A and B is always true? A) Both liquids A and B much exhibit hydrogen bonding. B) Both liquids A and B much have ion-induced dipole interactions. C) Both liquids A and B much have ion-dipole forces. D) Both liquids A and B much have London forces. E) Both liquids A and B much have dipole-dipole forces Answer: 3) The following plot shows a typical titration curve for the titration of diprotic acid H,A (Kal-1.2 x10 K.2-2.1 x 10-10) with NaOH. Given that the principal A-containing species at the first equivalence point is HA. pH Moles of OH added A buffer region is indicated by which of these point(s) a-d in the titration curve? E) points c and d A) point a and c B) points b and d ) point b and c D) points a and b Answer
Solution
The coordination number of a simple cubic cell is 6. Any atom in a simple cubic unit cell is surrounded by 6 nearest neighbor atoms and therefore, the coordination number is 6. Hence, C is the correct option.
[One question answered as per Chegg policy]
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(I) (30 points) Multiple-Choice Questions 1) The coordination number o.docx
1. (I) (30 points) Multiple-Choice Questions 1) The coordination number of a central sphere in a
unit cell is defined as the number of spheres of its nearest neighbors. What is the coordination
number in a simple cubic cell? A) 2 B)4 C)6 D)8E)12 Answer: ( 2) The vapor pressure of liquid
A is lower than that of liquid B at room temperature, also lower at 60°C. Which of the
following statements concerning about the liquids A and B is always true? A) Both liquids A and
B much exhibit hydrogen bonding. B) Both liquids A and B much have ion-induced dipole
interactions. C) Both liquids A and B much have ion-dipole forces. D) Both liquids A and B
much have London forces. E) Both liquids A and B much have dipole-dipole forces Answer: 3)
The following plot shows a typical titration curve for the titration of diprotic acid H,A (Kal-1.2
x10 K.2-2.1 x 10-10) with NaOH. Given that the principal A-containing species at the first
equivalence point is HA. pH Moles of OH added A buffer region is indicated by which of these
point(s) a-d in the titration curve? E) points c and d A) point a and c B) points b and d ) point b
and c D) points a and b Answer
Solution
The coordination number of a simple cubic cell is 6. Any atom in a simple cubic unit cell is
surrounded by 6 nearest neighbor atoms and therefore, the coordination number is 6. Hence, C is
the correct option.
[One question answered as per Chegg policy]
![(I) (30 points) Multiple-Choice Questions 1) The coordination number of a central sphere in a
unit cell is defined as the number of spheres of its nearest neighbors. What is the coordination
number in a simple cubic cell? A) 2 B)4 C)6 D)8E)12 Answer: ( 2) The vapor pressure of liquid
A is lower than that of liquid B at room temperature, also lower at 60°C. Which of the
following statements concerning about the liquids A and B is always true? A) Both liquids A and
B much exhibit hydrogen bonding. B) Both liquids A and B much have ion-induced dipole
interactions. C) Both liquids A and B much have ion-dipole forces. D) Both liquids A and B
much have London forces. E) Both liquids A and B much have dipole-dipole forces Answer: 3)
The following plot shows a typical titration curve for the titration of diprotic acid H,A (Kal-1.2
x10 K.2-2.1 x 10-10) with NaOH. Given that the principal A-containing species at the first
equivalence point is HA. pH Moles of OH added A buffer region is indicated by which of these
point(s) a-d in the titration curve? E) points c and d A) point a and c B) points b and d ) point b
and c D) points a and b Answer
Solution
The coordination number of a simple cubic cell is 6. Any atom in a simple cubic unit cell is
surrounded by 6 nearest neighbor atoms and therefore, the coordination number is 6. Hence, C is
the correct option.
[One question answered as per Chegg policy]](https://image.slidesharecdn.com/i30pointsmultiple-choicequestions1thecoordinationnumbero-230130232646-47d9603e/85/i-30-points-multiplechoice-questions-1-the-coordination-number-odocx-1-320.jpg)
