Which of the following statements is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 94, and shows prominent peaks in its IR spectrum at 3600–3200 and 1600 cm–1?
A) The compound has a molecular mass of 94.
B) The compound contains a C O group and Csp3-H hybridized bonds.
C) The compound contains an OH group and Csp3-H hybridized bonds.
D) Both (The compound has a molecular mass of 94) and (The compound contains a C O group and Csp3-H hybridized bonds) are true statements.
E) Both (The compound has a molecular mass of 94) and (The compound contains an OH group and Csp3-H hybridized bonds) are true statements.
A- the compound has a mass of 94
To determine which statements are true about the compound described, let's analyze the given information.
1. The compound has a molecular ion peak at mass 94 in its mass spectrum.
This means that the compound has a fragment with a mass of 94 and could indicate its molecular mass. However, it does not necessarily mean that the molecular mass of the compound is exactly 94. The molecular ion peak is typically the highest mass peak in the spectrum.
2. The compound shows prominent peaks in its IR spectrum at 3600–3200 cm–1 and 1600 cm–1.
Infrared (IR) spectroscopy is used to analyze the functional groups present in a compound. The peaks at 3600–3200 cm-1 typically indicate the presence of an -OH group, such as an alcohol or carboxylic acid. The peak at 1600 cm-1 is characteristic of a C=O (carbonyl) stretching vibration, which suggests the presence of a C=O group.
Now, let's analyze each statement:
A) The compound has a molecular mass of 94.
This statement cannot be confirmed solely based on the information provided. While the compound does have a molecular ion peak at 94, it does not guarantee that the molecular mass is exactly 94. There could be other fragments contributing to the mass spectrum.
B) The compound contains a C=O group and Csp3-H hybridized bonds.
This statement is supported by the information given. The prominent peak in the IR spectrum at 1600 cm-1 indicates the presence of a C=O (carbonyl) group. The Csp3-H hybridized bonds refer to typical carbon-hydrogen (C-H) bonds found in organic compounds.
C) The compound contains an -OH group and Csp3-H hybridized bonds.
This statement is also supported by the information given. The prominent peaks in the IR spectrum at 3600–3200 cm-1 suggest the presence of an -OH group, such as in an alcohol or carboxylic acid. Like statement B, it also indicates the presence of Csp3-H hybridized bonds.
Based on the analysis, the correct answer is option E:
Both (The compound has a molecular mass of 94) and (The compound contains an -OH group and Csp3-H hybridized bonds) are true statements.