(For compounds whose structure and formula are not known, chemists use an instrumental technique called mass spectrometry to determine the molecular formula of the compound.). Question 4.1: Explain the formation of a chemical bond. In other words, both the formula C8H6F3NO2 and the formula C8H8 have identical numbers of degrees of unsaturation. community of Chemistry. Books. How was it derived? Nor does VCAA and QTAC endorse or make any warranties regarding the study resources available on this site or sold by ATAR Notes Media Pty Ltd. VCE Study Designs and related content can be accessed directly at the VCAA website. Topic: Double Bond Equivalent Formula (Read 15824 times). Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6. This formula is a relict or even a relic from times when only a few people knew about graph theory in chemistry and had no access to fast computers and structure generators. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. Where did this formula come from? All rights reserved. The easiest way to find out the number of double bond equivalents (DBE) is to draw a feasible structure for a given atomic composition. "ATAR" is a registered trademark of the Victorian Tertiary Admissions Centre ("VTAC"); "VCE" is a registered trademark of the Victorian Curriculum and Assessment Authority ("VCAA"). Answers of Double bond equivalent in cubane is:Correct answer is '5'. Double bonds are a key component in the study of electrons and atoms. The degrees of unsaturation in a molecule are additive — a molecule with one double bond has one degree of unsaturation, a molecule with two double bonds has two degrees of unsaturation, and so forth. 0 Members and 1 Guest are viewing this topic. If the answer is not available please wait for a while and a community member will probably answer this Physics. © copyright 2003-2020 Study.com. Can you explain this answer? Degree/Level of Unsaturation (LU) or Double Bond Equivalent (DBE) Pre-requisite Reading: Identify single bond, double bond, triple bond, saturation, and unsaturation. He is currently a chemistry professor at Iowa State University. Can you explain this answer? NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. For every triple bond, two degrees of unsaturation are added to a molecule, because a molecule must lose four hydrogens to make a triple bond. Double bonds are a key component in the study of electrons and atoms. Services, Electron Affinity: Definition, Trends & Equation, Double Bond: Definition, Formation & Example, {{courseNav.course.mDynamicIntFields.lessonCount}}, Empirical Formula: Definition, Steps & Examples, Excited State in Chemistry: Definition & Overview, Capillary Action of Water: Definition & Examples, Conversion Factor in Chemistry: Definition, Formula & Practice Problems, Density: Definition, Formula & Practice Problems, What is Melting Point? Choose an answer and hit 'next'. Maths. To do so, you use the following conversion factors: Halogens (F, Cl, Br, I): Add one hydrogen to the molecular formula for each halogen present. For example, to determine the number of degrees of unsaturation in the formula C8H6F3NO2, you first make the proper substitutions for all atoms that are not hydrogen and carbon. It's worked for me every time so far! Moreover a tripple bond can be regarded as DBE=2. The Questions and Answers of Double bond equivalent in cubane is:Correct answer is '5'. Learn from the best tutors. Apart from being the largest Chemistry community, EduRev has the largest solved are solved by group of students and teacher of Chemistry, which is also the largest student Arthur Winter is a graduate of Frostburg State University, where he received his BS in chemistry. However, you can also determine the molecular formula and solve for the degrees of unsaturation by using the formula. Please login to system to use all resources. Biology. Can you explain this answer? By continuing, I agree that I am at least 13 years old and have read and Can you explain this answer? 1. over here on EduRev! I didn't manage to get through all that, quite a wall of text. The molecule contains one nitrogen, so you subtract one hydrogen from the molecular formula. Can't you just tell from the fatty acid molecular formula whether or not it's saturated, monounsaturated, and polyunsatured, that's what my teacher has taught me. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something.
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