Determine the compound (name or structure) from the data. Explain features from each data. Molecular formula: C3H8O. ### Understanding NMR Spectroscopy: Proton NMR Spectrum Analysis**Introduction to NMR Spectroscopy:**Nuclear Magnetic Resonance (NMR) spectroscopy is an analytical chemistry technique used to determine the content and purity of a sample as well as its molecular structure. Proton NMR (1H NMR) specifically measures the environment of hydrogen atoms in a molecule, providing detailed information about the hydrogen-hydrogen connectivity.### Interpreting the Given Proton NMR Spectrum**Graph Overview:**1. **Horizontal Axis (ppm):** - The horizontal axis represents the chemical shift (δ) in parts per million (ppm). The scale typically ranges from 0 to 11 ppm. - Chemical shifts provide information about the electronic environment surrounding the hydrogen atoms.2. **Peaks and Integration:** - Each peak corresponds to hydrogen atoms in a particular electronic environment. - The area under each peak is proportional to the number of hydrogen atoms producing the signal, often shown as integration values.**Detailed Explanation:**- **Peak at around 1.2 ppm:** - **Integration Value: 6 H** - This peak represents six hydrogen atoms. It is likely a result of two equivalent methyl groups (–CH3) in a similar chemical environment.- **Peak at around 2.1 ppm:** - **Integration Value: 1 H** - This peak corresponds to a single hydrogen atom, possibly from a methyne group (–CH) adjacent to an electronegative group or unsaturation.- **Peak at around 3.4 ppm:** - **Integration Value: 1 H** - This peak represents another single hydrogen atom, which might be part of a more deshielded environment such as a methylene group (–CH2) adjacent to an electron-withdrawing group or heteroatom.- **Peak at around 7.4 ppm:** - **Integration Value: 1 H** - This peak represents a single hydrogen atom likely part of an aromatic ring or other unsaturated system, indicating a deshielded environment.**NMR Spectrum Annotation:**- **Peak Integration:** - Peaks are annotated with the number of hydrogen atoms each signal represents (e.g., 1H, 6H).- **Chemical Shift (δ):** - Peaks are plotted along the x-axis according to their chemical shift in ppm.Understanding and interpreting ### Fourier Transform Infrared (FTIR) Spectroscopy Analysis#### DescriptionThis image represents an FTIR (Fourier Transform Infrared) spectrum, which is commonly used in analytical chemistry to identify organic, polymeric, and, in some cases, inorganic materials.#### Graph Explanation- **X-Axis (Wavenumber, cm⁻¹):** The horizontal axis in the graph is labeled "WAVENUMBER (cm⁻¹)." The wavenumber is the reciprocal of the wavelength expressed in centimeters, and it indicates the frequency of vibration of molecular bonds. The range of wavenumbers in the provided spectrum spans from approximately 4000 cm⁻¹ to 550 cm⁻¹. - **Y-Axis (Transmittance, %):** The vertical axis is labeled "TRANSMITTANCE (%)." Transmittance is the percentage of incident light that passes through the sample. A high transmittance value means that a significant amount of light passed through the sample at that specific wavenumber, whereas a low transmittance value indicates that most of the light was absorbed by the sample.#### Key Features- **Absorption Peaks:** The spectrum exhibits several peaks that correspond to specific frequencies at which the sample absorbs infrared light. These absorption peaks are characteristic of particular molecular vibrations and can be used to identify functional groups within the sample material. - **Broad Transmittance Regions and Sharp Peaks:** - Around 4000-3000 cm⁻¹, there is a significant absorption indicating strong O-H or N-H stretching. - A broad peak near 2900 cm⁻¹ is typically indicative of C-H stretching vibrations from alkanes. - Multiple peaks between 1600 cm⁻¹ and 1450 cm⁻¹ likely represent C=C or C=O stretching vibrations. - Strong, sharp peaks in the region of 1000-600 cm⁻¹ often correspond to C-O, C-N, or C-X (halides) stretching vibrations or bending vibrations.#### Educational UseThis type of spectroscopic analysis is fundamental in understanding the chemical composition and molecular structure of materials. By identifying the specific frequencies at which different types of bonds absorb infrared light, scientists can determine the presence of various functional groups and infer the molecular structure of the sample.#### Practical Applications- **Material Identification:** FTIR is extensively used to identify materials in various

Answered: Image /qna-images/answer/31563725-8396-4696-a64b-9020489886ba.jpg

Answered: Determine the compound (name or…

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...