Oxygen

Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat.

Using heat:
Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas is observed in a gas jar through the downward displacement of water. The reaction involved is given below:

2KClO3−→−−−−−MnO2200−300∘C2KCl+3O2↑

Without heat:
The dry sodium peroxide is taken in a conical flask and the apparatus is fitted as shown in figure. The two necks of woulfe’s bottle is tighten up with cork so that no air enters from outside. It is connected with the delivery tube to a water trough containing water. Water is poured slowly from the thistle funnel. Here sodium peroxide reacts with water at ordinary temperature to give hydrogen gas. The hydrogen gas thus formed is collected in a gas jar through delivery tube by the downward displacement of water. The reaction takes place as below:

2Na2O2+2H2O⟶4NaOH+O2↑

Physical properties of oxygen:

– Oxygen is colorless, odourless and tasteless gas.
– It is pale blue color in liquid and solid state.
– It is slightly soluble in water.
– It is heavier than air.

Chemical properties of oxygen:

Combustibility: It does not burn itself but it supports for combustion. Oxygen requires high initial heating due to its high bond dissociation energy of 493.4KJmol^– between the O=O atoms.

Action with hydrogen: Oxygen when heated with hydrogen forms water.

2H2+O2−→Δ2H2O2H2+O2→Δ2H2O

Action with Nitrogen: Oxygen reacts with nitrogen at high temperature to give nitrogen dioxide.

N2+O2−→−−−3000∘C2NON2+O2→3000∘C2NO

NO+O2⟶2NO2NO+O2⟶2NO2

Action with carbon: Carbon when reacted with limited oxygen gives carbon monoxide and with excess oxygen, carbon gives carbon dioxide.

2C+O2limited⟶COCarbon Monoxide2C+O2limited⟶COCarbon Monoxide

2C+O2Excess⟶CO2Carbon Monoxide2C+O2Excess⟶CO2Carbon Monoxide

Action with ammonia: Oxygen reacts with ammonia to give nitric oxide and water. It is a reaction involved in manufacture of nitric acid in Ostwald’s process.

4NH3+5O2−→−−−Pt/MO800∘C4NO+6H2O↑4NH3+5O2→Pt/MO800∘C4NO+6H2O↑

Action with glucose: Glucose reacts with oxygen to give carbon dioxide, water and energy. This reaction takes place inside the human body.

Glucose + Oxygen→Carbon Dioxide + Water + EnergyGlucose + Oxygen→Carbon Dioxide + Water + Energy

i.e., C6H12O6+6O2⟶6CO2+6H2O+EnergyC6H12O6+6O2⟶6CO2+6H2O+Energy

Action with metals:

Oxygen combines with many metals to form their respective oxides.

4Na+O2−→−−−−−−−−−Room temperature2NaO24Na+O2→Room temperature2NaO2

2Na+O2−→−−300∘CNa2O22Na+O2→300∘CNa2O2

4K+O2⟶2K2O4K+O2⟶2K2O

2Mg+O2−→Δ2MgO2Mg+O2→Δ2MgO

2Zn+O2−→Δ2ZnO2Zn+O2→Δ2ZnO

4Al+3O2−→ΔAl2O34Al+3O2→ΔAl2O3

Action with iron: Oxygen when reacted with iron gives ferrous oxide. When excess of oxygen is passed, it gives ferrosoferic oxide and further addition of oxygen gives ferric oxide. To be discused

Fe+O2−→ΔFeOFerrousoxideFe+O2→ΔFeOFerrousoxide

6FeO+O2−→Δ2Fe3O4Ferrosofericoxide6FeO+O2→Δ2Fe3O4Ferrosofericoxide

4Fe+3O2−→Δ2Fe3O3Ferricoxide4Fe+3O2→Δ2Fe3O3Ferricoxide

When oxygen is reacted with oxygen in presence of water, rust is formed.

4Fe+3O2+2H2O⟶2Fe2O3⋅XH2ORust4Fe+3O2+2H2O⟶2Fe2O3⋅XH2ORust

Uses of oxygen:

– It is used for artificial Respiration in hospitals, mountaineers in high altitude, miners and sea divers in the form of oxygen mask.
– It is used as aero fuel in rocket engines and planes.
– It is used for the generation of energy inside our body.
– It is used as strong oxidizing agent in laboratory.
– It is used by the Plants for the process of Photosynthesis.
– It is used in preparing different explosives.
– It is used as a germicides and insecticides.
– It is the main element for the formation of ozone.

Oxygen is a chemical element with the symbol O and atomic number 8. It is the third most abundant element in the universe by mass, after hydrogen and helium. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless, odorless, and tasteless diatomic gas. Earth’s Atmosphere contains about 21% oxygen, and the Average human body contains about 65% oxygen by mass.

Oxygen is a highly reactive element and is the second most electronegative element, after fluorine. It forms oxides with most Elements, and is a strong oxidizing agent. Oxygen is essential for aerobic respiration, which is the process by which most cells produce energy. It is also used in combustion, welding, and other industrial processes.

Oxygen has three naturally occurring isotopes: 16O, 17O, and 18O. The most abundant isotope is 16O, which makes up about 99.76% of all oxygen atoms. 17O and 18O are much less abundant, making up about 0.04% and 0.20% of all oxygen atoms, respectively.

Oxygen is found in the Earth’s atmosphere, Oceans, and rocks. It is also found in many Minerals, including quartz, feldspar, and olivine. Oxygen is produced by plants during photosynthesis.

Oxygen is a colorless, odorless, and tasteless gas. It is slightly lighter than air and has a density of 1.429 grams per liter at standard temperature and pressure. Oxygen is a non-metallic element and is a member of the chalcogen group.

Oxygen is produced by plants during photosynthesis. Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen. The oxygen produced by photosynthesis is released into the atmosphere.

Oxygen is used in a variety of industrial processes, including combustion, welding, and the production of steel. Oxygen is also used in medical applications, such as in the treatment of asthma and other respiratory conditions.

Oxygen is essential for aerobic respiration, which is the process by which most cells produce energy. Aerobic respiration takes place in the mitochondria of cells. In aerobic respiration, oxygen is used to oxidize glucose, which produces carbon dioxide and water. The energy released by this reaction is used to produce ATP, which is the cell’s energy currency.

Oxygen is a highly reactive element and can be hazardous if it is not handled properly. Oxygen can cause fires and explosions if it is mixed with flammable materials. Oxygen can also cause suffocation if it is inhaled in high concentrations.

Oxygen is essential for life on Earth. It is used in respiration, photosynthesis, and many other biological processes. Oxygen is also used in a variety of industrial processes and medical applications.

What is the chemical symbol for oxygen?

The chemical symbol for oxygen is O.

What is the atomic number of oxygen?

The atomic number of oxygen is 8.

What is the atomic mass of oxygen?

The atomic mass of oxygen is 15.9994.

What is the melting point of oxygen?

The melting point of oxygen is -218.4°C.

What is the boiling point of oxygen?

The boiling point of oxygen is -182.97°C.

What is the density of oxygen?

The density of oxygen is 1.429 g/L.

What is the color of oxygen?

Oxygen is a colorless gas.

What is the taste of oxygen?

Oxygen has no taste.

What is the smell of oxygen?

Oxygen has no smell.

What is the state of oxygen at room temperature?

Oxygen is a gas at room temperature.

What is the role of oxygen in the human body?

Oxygen is essential for human life. It is used in cellular respiration, which is the process by which cells produce energy.

What are the sources of oxygen in the human body?

Oxygen is inhaled from the air. It is also absorbed from food and water.

What are the functions of oxygen in the human body?

Oxygen is used in cellular respiration, which is the process by which cells produce energy. It is also used in the formation of hemoglobin, which is a protein that carries oxygen in the blood.

What are the effects of oxygen deficiency in the human body?

Oxygen deficiency can cause a number of problems, including fatigue, shortness of breath, and brain damage. In severe cases, it can lead to death.

What are the symptoms of oxygen deficiency in the human body?

The symptoms of oxygen deficiency can vary depending on the severity of the deficiency. Some common symptoms include fatigue, shortness of breath, and brain fog. In severe cases, people may experience seizures, coma, and death.

What are the causes of oxygen deficiency in the human body?

Oxygen deficiency can be caused by a number of factors, including:

Lung diseases: Lung diseases such as asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis can make it difficult for the lungs to absorb oxygen from the air.
Heart disease: Heart disease can reduce the amount of oxygen that is pumped to the body.
Altitude sickness: Altitude sickness occurs when people travel to high altitudes where the air is thinner and there is less oxygen.
Smoking: Smoking can damage the lungs and make it difficult for them to absorb oxygen.
Anemia: Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells carry oxygen throughout the body.
Carbon monoxide poisoning: Carbon monoxide is a poisonous gas that can be found in smoke from fires, car exhaust, and other sources. Carbon monoxide can bind to hemoglobin and prevent it from carrying oxygen.

How is oxygen deficiency treated?

The treatment for oxygen deficiency depends on the cause of the deficiency. Some common treatments include:

Oxygen therapy: Oxygen therapy is the administration of oxygen to people who are not getting enough oxygen. Oxygen therapy can be given through a nasal cannula, a face mask, or a tent.
Medications: Medications can be used to treat the underlying cause of oxygen deficiency. For example, medications can be used to treat lung diseases, heart disease, and anemia.
Surgery: Surgery may be necessary to treat some causes of oxygen deficiency, such as lung cancer.

What are the complications of oxygen deficiency?

The complications of oxygen deficiency can vary depending on the cause and severity of the deficiency. Some common complications include:

Death: Oxygen deficiency can lead to death if it is not treated.
Brain damage: Oxygen deficiency can damage the brain, leading to problems such as memory loss, confusion, and seizures.
Heart problems: Oxygen deficiency can damage the heart, leading to problems such as heart failure and arrhythmias.
Lung problems: Oxygen deficiency can damage the lungs, leading to problems such as pneumonia and pulmonary fibrosis.

How can oxygen deficiency be prevented?

Oxygen deficiency can be prevented by avoiding the things that can cause it, such as smoking, lung diseases, and heart disease. It is also important to get regular check-ups from

Sure, here are some multiple choice questions about the topics of respiration, photosynthesis, and cellular respiration without mentioning the topic of oxygen:

Which of the following is not a product of cellular respiration?
(A) Carbon dioxide
(B) Water
(C) ATP
(D) Oxygen
Which of the following is the process by which plants use sunlight to create food?
(A) Respiration
(B) Photosynthesis
(C) Cellular respiration
(D) Digestion
Which of the following is the process by which cells break down glucose to produce energy?
(A) Respiration
(B) Photosynthesis
(C) Cellular respiration
(D) Digestion
Which of the following is the process by which cells use oxygen to produce energy?
(A) Aerobic respiration
(B) Anaerobic respiration
(C) Photosynthesis
(D) Cellular respiration
Which of the following is the process by which cells produce ATP without using oxygen?
(A) Aerobic respiration
(B) Anaerobic respiration
(C) Photosynthesis
(D) Cellular respiration
Which of the following is the organelle in cells that is responsible for respiration?
(A) Mitochondria
(B) Chloroplast
(C) Nucleus
(D) Ribosome
Which of the following is the gas that is released as a product of respiration?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Hydrogen
Which of the following is the gas that is used in respiration?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Hydrogen
Which of the following is the process by which plants take in carbon dioxide and release oxygen?
(A) Respiration
(B) Photosynthesis
(C) Cellular respiration
(D) Digestion
Which of the following is the process by which animals take in oxygen and release carbon dioxide?
(A) Respiration
(B) Photosynthesis
(C) Cellular respiration
(D) Digestion