MC
1.). Which of the following concerning the molecule below is INCORRECT?
Cl-S-Cl
A. It contains two polar bonds.
B. It is non-polar.
C. It has eight lone pairs of electrons.
D. It is V-shaped.
2.). Which of the following liquids will deflect towards a charged rod?
(1) H2O
(2) CHCl3
(3) CCl4
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)
2條簡單 Chem MC.急
2011-10-11 3:26 am
回答 (2)
2011-10-11 5:26 am
✔ 最佳答案
MC 1.A. Correct: S is partial positive(δ+) and Cl is partial negative(δ-) to make S-Cl bonds polar.
B. Incorrect: S has two lone pairs and two bond pairs which makes it arrange asymmetrically to give rise a net dipole moments in the molecules. Hence it is a polar molecule.
C. Correct
圖片參考：http://i453.photobucket.com/albums/qq252/tomchan1216/SCl2molecule.jpg
D. Correct, please refer to option C.
MC 2.
(1) and (2) are polar so they will deflect towards a charged rod.
(3) is non-polar so it will not deflect towards a charged rod.
Hence the answer is A.
參考: Knowledge is power.
2011-10-11 3:54 am
1. B
2. A
搞掂, 唔會錯......
2. A
搞掂, 唔會錯......
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