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Hydrogen peroxide, in the pure state, is : (a) non-planar and almost colorless (b) linear and blue in color (c) linear and almost colorless (d) planar and blue in color

Short Answer

Expert verified
(a) non-planar and almost colorless

Step by step solution

01

Understand the Molecular Geometry

Hydrogen peroxide \((H_2O_2)\) is composed of two oxygen atoms and two hydrogen atoms. To determine its geometry, it's essential to consider its molecular shape and bonding. The molecule is non-linear due to the bent shape of the O-H bond around each oxygen atom.
02

Identify the Color

Hydrogen peroxide is commonly recognized for being almost colorless. It appears as a pale blue liquid in its pure form but is described as nearly colorless in most practical observations.
03

Analyze the Bonding and Planarity

The molecule \((H_2O_2)\) is not planar due to the torsional strain around the single O-O bond, which leads to a twisted or 'non-planar' molecular geometry.
04

Select the Correct Option

With the information of hydrogen peroxide being non-planar and almost colorless, we can match these characteristics with the given options. Option (a) 'non-planar and almost colorless' fits the description of hydrogen peroxide in its pure state.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Molecular Geometry
Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule. Understanding this concept is crucial as it influences the physical and chemical properties of the substance, including its reactivity, polarity, phase, color, magnetism, and biological activity. For hydrogen peroxide - The structure is determined by the positions of the atoms. - The angles between bonded atoms and the overall spatial configuration significantly contribute to its chemical characteristics. Due to the repulsion between electrons surrounding each atom (termed "electron pair repulsion"), molecules adopt specific shapes to minimize these repulsive forces. This concept is often simplified by VSEPR (Valence Shell Electron Pair Repulsion) theory. For example, in hydrogen peroxide - The geometry is not linear because each oxygen atom forms bent angles with hydrogen atoms, resulting in a V-like or bent shape. - This results from electron pair repulsion in the molecule, forcing it into a non-linear geometry. Thus, in the case of hydrogen peroxide, its molecular geometry is best described as non-planar.
Hydrogen Peroxide
Hydrogen peroxide - Consists of two hydrogen atoms and two oxygen atoms, forming the chemical formula \[H_2O_2\].- It is often used as a disinfectant or a bleaching agent due to its strong oxidizing properties. - In its pure form, it is a pale blue liquid; however, in common concentrations, it appears almost colorless and is safe for various household applications in diluted form.Despite its simple composition, it is a chemically interesting molecule.- It exhibits a notable feature of not being stable under most conditions and decomposes easily into water and oxygen: \[2H_2O_2 \rightarrow 2H_2O + O_2\].This instability makes its pure form both powerful and hazardous, requiring careful handling and storage.In its concentrated form, hydrogen peroxide serves diverse applications in industries due to its reactivity.It plays roles in pollution control, paper bleaching, and even serves in rocket fuel. It is its chemical make-up, consisting of hydroxyl (\[OH\]) groups, that contributes to its significant versatility.
Molecular Shape and Bonding
Understanding molecular shape and bonding in hydrogen peroxide offers crucial insight into why the molecule exists in its non-planar form. The shape is largely determined by how atoms bond and the electrostatic forces operating within the molecules. - In hydrogen peroxide, each oxygen atom has two lone pairs of electrons, and these lone pairs - Push the O-H bonds into a bent shape. This results in hydrogen peroxide having a twisted, non-planar structure, due to the unpaired electrons wanting to stay as far apart as possible. - The single bond connecting the two oxygen atoms can rotate, which contributes to the torsional strain and affects its shape. This bond rotation and the interaction between electron pairs lead to a non-planar form, also distinctively affecting its chemical and physical properties. The bent shape of the molecule as well as its bonding contributes to its chemical reactivity, making it a potent oxidizing agent. Understanding these principles helps predict how hydrogen peroxide will behave in various chemical reactions, enhancing its utility in scientific and industrial fields.

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Most popular questions from this chapter

Which one of the following statements about water is FALSE? [Main 2016] (a) There is extensive intramolecular hydrogen bonding in the condensed (b) Ice formed by heavy water sinks in normal water. (c) Water is oxidized to oxygen during photosynthesis. (d) Water can act both as an acid and as a base.

The species present in solution when \(\mathrm{CO}_{2}\) is dissolved in water are \([\mathbf{2 0 0 6}-\mathbf{5 M},-1]\) (a) \(\mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{CO}_{3}, \mathrm{HCO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\) (b) \(\mathrm{H}_{2} \mathrm{CO}_{3}, \mathrm{CO}_{3}^{2-}\) (c) \(\mathrm{CO}_{3}^{2-}, \mathrm{HCO}_{3}^{-}\) (d) \(\mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{CO}_{3}\)

From the following statements regarding \(\mathrm{H}_{2} \mathrm{O}_{2}\), choose the incorrect statement : (a) It has to be stored in plastic or wax lined glass bottles in dark (b) It has to be kept away from dust (c) It can act only as an oxidizing agent (d) It decomposes on exposure to light

Identify the incorrect statement regarding heavy water : [Main Online April 9, 2016] (a) It reacts with \(\mathrm{SO}_{3}\) to form deuterated sulphuric acid \(\left(\mathrm{D}_{2} \mathrm{SO}_{4}\right)\). (b) It is used as a coolant in nuclear reactors. (c) It reacts with \(\mathrm{CaC}_{2}\) to produce \(\mathrm{C}_{2} \mathrm{D}_{2}\) and \(\mathrm{Ca}(\mathrm{OD})_{2}\). (d) It reacts with \(\mathrm{Al}_{4} \mathrm{C}_{3}\) to produce \(\mathrm{CD}_{4}\) and \(\mathrm{Al}(\mathrm{OD})_{3}\).

18\. Give reasons for the following: (i) Hydrogen peroxide acts as an oxidising as well as a reducing agent. (ii) Hydrogen peroxide is a better oxidising agent that water.

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