- Formula, Definition & Regulation, Photochemical Smog: Definition, Formation & Effects, What is Sodium Bicarbonate? It's poisonous and has a strong odor. - Definition, Structure & Formula, What is Carbon Dioxide? It can be used to disinfect materials, such as wood or straw, and as a fumigating agent to eliminate insects and other pests. In addition to toxicities due to sulfur dioxide itself, which include direct effects on photosynthesis in plants and asthmatic type reactions in humans, sulfur dioxide reacts with oxygen and water in the atmosphere to become sulfuric acid, which may fall to the earth as acid rain. pH control is critical for the proper functioning of the scrubber system. In the laboratory the gas may be prepared by reducing sulfuric acid (H2SO4) to sulfurous acid (H2SO3), which decomposes into water and sulfur dioxide, or by treating sulfites (salts of sulfurous acid) with strong acids, such as hydrochloric acid, again forming sulfurous acid. - Definition & Explanation, What is Silica? It is a step toward converting sulfur, oxygen, and water into sulfuric acid. 22 chapters | True B. Sulfur dioxide is also a widely-used pest control product, a preservative in many dried foods, and a bleaching agent. The chemical formula is SO2. Premium Membership is now 50% off! In this lesson, we'll discuss the definition, formula, uses, and problems related to sulfur dioxide. - Definition, Structure & Formula, The Common Ion Effect and Selective Precipitation, Reactions of Acids: Metals, Carbonates & Hydroxides, What Is Glucose? Free oxygen molecules combine with sulfur dioxide given off by the oxidation of sulfur-containing materials to form sulfur trioxide (SO3). - Properties & Definition, What is Nitric Acid? The first is by having a disruptive effect on photosynthesis. flashcard set{{course.flashcardSetCoun > 1 ? Sulfur dioxide is composed of one sulfur atom and two (the "di" in "dioxide") atoms of oxygen. imaginable degree, area of Sulfur dioxide occurs naturally during volcanic activity and is produced as a waste gas when sulfur-containing materials are heated, such as the burning of coal or oil, or the smelting of metal. Corrections? An error occurred trying to load this video. People interact with sulfur dioxide when they start their car in the morning and can smell it when they strike a match. Sulfur dioxide has a pungent, irritating odour, familiar as the smell of a just-struck match. This is characterized by swelling of the bronchial passages (airway between throat and lungs), which can make it hard to breathe. Michael has taught college-level mathematics and sociology; high school math, history, science, and speech/drama; and has a doctorate in education. - Facts, Uses, Properties & Formula, Hydrogen Chloride: Formula, Structure & Properties, What is Phosphoric Acid? As a member, you'll also get unlimited access to over 83,000 Aluminum picked up from the soil by the acids end up in the plants' root systems, causing further damage. study How could I produce sulfuric acid at home? It's used in the production of steel, fertilizers, medicines, fuels, batteries, paper, plastics, and in many other applications. Get access risk-free for 30 days, Sulfur dioxide. Sulfur dioxide is a colorless, water-soluble gas that forms when sulfur burns. credit by exam that is accepted by over 1,500 colleges and universities. This article was most recently revised and updated by, https://www.britannica.com/science/sulfur-dioxide, University of Bristol - School of Chemistry - Sulphur Dioxide, Australian Government - Department of the Environment and Water Resources - Sulfur dioxide, Wisconsin Department of Health Services - Sulfur Dioxide, sulfur dioxide - Student Encyclopedia (Ages 11 and up). All rights reserved. In human and animal lungs, sulfuric dioxide can cause asthmatic reactions. To learn more, visit our Earning Credit Page. Anyone can earn Working Scholars® Bringing Tuition-Free College to the Community. Sulfur dioxide is a bent molecule with polar covalent bonds between one sulfur atom and two oxygen atoms. The chemical formula is SO2. In the atmosphere it can combine with water vapour to form sulfuric acid, a major component of acid rain; in the second half of the 20th century, measures to control acid rain were widely adopted. Sciences, Culinary Arts and Personal The required chemical equation is. Log in or sign up to add this lesson to a Custom Course. It is produced in huge quantities in intermediate steps of sulfuric acid manufacture. Get the unbiased info you need to find the right school. Let's take a few moments to review what we've learned about sulfur dioxide. Sulfur dioxide is a gaseous compound composed of sulfur and oxygen atoms. flashcard sets, {{courseNav.course.topics.length}} chapters | SO 2 emissions are proportional to feed sulphur content. Sulfur Dioxide (SO2) is a chemical compound with 197.69 K and 1.67 kPa triple point. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. - Definition, Characteristics & Examples, What Is Carbon? | {{course.flashcardSetCount}} The Sulphur dioxide(SO2) gas is oxidized to Sulphur trioxide(SO3), only when SO2 comes in contact with the surface of catalyst known as Vanadium pentaoxide(V2O5), in presence of 2–3 atmospheric pressure and 450–500°c temperature. Occurring in nature in volcanic gases and in solution in the waters of some warm springs, sulfur dioxide usually is prepared industrially by the burning in air or oxygen of sulfur or such compounds of sulfur as iron pyrite or copper pyrite. Sulfur Dioxide (SO2) is a chemical compound with 197.69 K and 1.67 kPa triple point. Create an account to start this course today. False, In a (foolish) attempt to evaluate the spike recovery of a method for free SO_2 analysis, 8.3 mg potassium metabisulfite (K_2S_2O_5, molar mass 222.31 g/mol) is added to a 100 mL wine sample. Released naturally by volcanic activity, this gas is actually toxic with very sharp and irritating smell like burning matches. It is produced in huge quantities in intermediate steps of sulfuric acid manufacture. Sulfur dioxide has the chemical composition of SO2 and is also commonly referred to as sulfurous acid anhydride, sulfurous anhydride or sulfur oxide. All other trademarks and copyrights are the property of their respective owners. Released naturally by volcanic activity, this gas is actually toxic with very sharp and irritating smell like burning matches. It is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning … The chemical formula of sulfur dioxide is SO 2. 2SO2 + … succeed. This molecule is ideally set up to absorb water and become sulfuric acid (H2 SO4), which is also the primary industrial use for sulfur dioxide. {{courseNav.course.mDynamicIntFields.lessonCount}} lessons Industries use it as a bleaching agent, a preservative, a fumigant, and a primary source material for making sulfuric acid, a necessary chemical in many industries. Black Friday Sale! Earn Transferable Credit & Get your Degree, Sulfur Dioxide & Sulfur Trioxide Reaction: Conditions & Equilibrium, Nitrogen Oxides: Sources, Reactions & Equations, What is Sulfate?