A structure of benzene proposed by Sir James Dewar, having a hexagonal ring of six carbon atoms with two opposite atoms joined by a long single bond across the ring and with two double C-C bonds, one on each side of the hexagon. Dewar structures contribute to the resonance hybrid of benzene.

According to Kekule benzene contains three double bonds, the chemical properties of benzene should resemble those of alkene. But actually it is not so. Benzene is highly stable and forms substitution compounds easily. The resistance of double bonds in benzene for addition reactions.

Resonance of Benzene All the carbon atoms in the benzene ring are sp2 hybridized. One of the two sp2 hybridized orbitals of one atom overlaps with the sp2 orbital of adjacent carbon atom forming six C-C sigma bonds. Hence, it explains the formation of two resonance structures proposed by Kekule.

Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each.

From the given image we can conclude that 3 aromatic isomers exists for dibromobenzene.

The structure of benzene has been of interest since its discovery. German chemists Joseph Loschmidt (in 1861) and August Kekule von Stradonitz (in 1866) independently proposed a cyclic arrangement of six carbons with alternating single and double bonds.

C6H6

The Department of Health and Human Services (DHHS) has determined that benzene causes cancer in humans. Long-term exposure to high levels of benzene in the air can cause leukemia, cancer of the blood-forming organs.

4. Analysis of Benzene in Foods

The most likely reason we like the smell of our farts is simply because we habituate easily. That means that if we fart all the time—which we all do, around half a liter a day—we’re very used to the smell already, says Loretta Breuning, Ph. D., who writes about brain chemistry and the social behavior of mammals.

Benzene is a by-product of the combustion of tobacco in cigarettes. Exposure to cigarette smoke accounts for roughly half of all human exposure to this toxin in the United States. Benzene is extremely volatile.

There are approximately 600 ingredients in cigarettes. When burned, cigarettes create more than 7,000 chemicals. At least 69 of these chemicals are known to cause cancer, and many are toxic. Many of these chemicals also are found in consumer products, but these products have warning labels—such as rat poison packaging.

Trying to hold it in leads to a build up of pressure and major discomfort. A build up of intestinal gas can trigger abdominal distension, with some gas reabsorbed into the circulation and exhaled in your breath. Holding on too long means the build up of intestinal gas will eventually escape via an uncontrollable fart.

Food intolerance is a very common cause of bad odor flatulence. Typical conditions that can cause smelly flatulence include lactose and gluten intolerances. In both of these conditions, the body’s inability to break down lactose or gluten causes smelly gas to build up and eventually be released.