Which of the following name-formula pairs do BOTH the name and formula refer to the same chemical compound? I.  sulfur trioxide, SO3 II.  dinitrogen quadraoxide, N2O4 III.  phosophorus pentachloride, PCl5   A. I and III  ONLY   B. I, II, and III   C. II and III ONLY   D. I and II ONLY   E. I ONLY

World of Chemistry, 3rd edition
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ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter4: Nomenclature
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Which of the following name-formula pairs do BOTH the name and formula refer to the same chemical compound?

I.  sulfur trioxide, SO3

II.  dinitrogen quadraoxide, N2O4

III.  phosophorus pentachloride, PCl5

  A.

I and III  ONLY

  B.

I, II, and III

  C.

II and III ONLY

  D.

I and II ONLY

  E.

I ONLY

Expert Solution
Step 1

SOLUTION:

Step 1:

  1. SO3 is chemically called as sulfur trioxide. The chemical name and formula both refer to the same compound.
Step 2

Step 2:

N2O4 is the chemical compound usually referred to as nitrogen tetroxide instead of quadraoxide.

PCl5 is the chemical compound with the chemical name Phosphorus pentachloride.

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