Assigning Oxidation States Example Problem

The oxidation state of an atom in a molecule refers to the degree of oxidation of that atom. Oxidation states are assigned to atoms by a set of rules based on the arrangement of electrons and bonds around that atom. This means each atom in the molecule has its own oxidation state which could be different from similar atoms in the same molecule.These examples will use the rules outlined in Rules for Assigning Oxidation Numbers. Key Takeaways: Assigning Oxidation States An oxidation number refer to the quantity of electrons that may be gained or lost by an atom. An atom of an element may be capable of multiple oxidation numbers.The oxidation state is the positive or negative number of an atom in a compound, which may be found by comparing the numbers of electrons shared by the cation and anion in the compound needed to balance each others charge.The cation has a positive oxidation state, while the anion has a negative oxidation state. The cation is listed first in a formula or compound name. Problem: Assign oxidation states to each atom in H2OAccording to rule 5, oxygen atoms typically have an oxidation state of -2.According to rule 4, hydrogen atoms have an oxidation state of 1.We can check this using rule 9 where the sum of all oxidation states in a neutral molecule is equal to zero.(2 x 1) (2 H) -2 (O) 0 TrueThe oxidation states check out.Answer: The hydrogen atoms have an oxidation state of 1 and the oxygen atom has an oxidation state of -2.Problem: Assign oxidation states to each atom in CaF2.Calcium is a Group 2 metal. Group IIA metals have an oxidation of 2.Fluorine is a halogen or Group VIIA element and has a higher electronegativity than calcium. According to rule 8, fluorine will have an oxidation of -1.Check our values using rule 9 since CaF2 is a neutral molecule:2 (Ca) (2 x -1) (2 F) 0 True.Answer: The calcium atom has an oxidation state of 2 and the fluorine atoms have an oxidation state of -1.Problem: Assign oxidation states to the atoms in hypochlorou s acid or HOCl.br/>Hydrogen has an oxidation state of 1 according to rule 4.Oxygen has an oxidation state of -2 according to rule 5.Chlorine is a Group VIIA halogen and usually has an oxidation state of -1. In this case, the chlorine atom is bonded to the oxygen atom. Oxygen is more electronegative than chlorine making it the exception to rule 8. In this case, chlorine has an oxidation state of 1.Check the answer:1 (H) -2 (O) 1 (Cl) 0 TrueAnswer: Hydrogen and chlorine have 1 oxidation state and oxygen has -2 oxidation state.Problem: Find the oxidation state of a carbon atom in C2H6. According to rule 9, the sum total oxidation states add up to zero for C2H6.2 x C 6 x H 0Carbon is more electronegative than hydrogen. According to rule 4, hydrogen will have a 1 oxidation state.2 x C 6 x 1 02 x C -6C -3Answer: Carbon has a -3 oxidation state in C2H6.Problem: What is the oxidation state of the manganese atom in KMnO4?According to rule 9, the sum total of oxidation states of a ne utral molecule equal zero.br/>K Mn (4 x O) 0Oxygen is the most electronegative atom in this molecule. This means, by rule 5, oxygen has an oxidation state of -2.Potassium is a Group IA metal and has an oxidation state of 1 according to rule 6.1 Mn (4 x -2) 01 Mn -8 0Mn -7 0Mn 7Answer: Manganese has an oxidation state of 7 in the KMnO4 molecule.Problem: What is the oxidation state of the sulfur atom in the sulfate ion - SO42-.Oxygen is more electronegative than sulfur, so the oxidation state of oxygen is -2 by rule 5.SO42- is an ion, so by rule 10, the sum of the oxidation numbers of the ion is equal to the charge of the ion. In this case, the charge is equal to -2.S (4 x O) -2S (4 x -2) -2S -8 -2S 6Answer: The sulfur atom has an oxidation state of 6.Problem: What is the oxidation state of the sulfur atom in the sulfite ion - SO32-?Just like the previous example, oxygen has an oxidation state of -2 and the total oxidation of the ion is -2. The only difference is th e one less oxygen.br/>S (3 x O) -2S (3 x -2) -2S -6 -2S 4Answer: Sulfur in the sulfite ion has an oxidation state of 4.

Characteristics of Bipolar Disorders Essay - 1304 Words

Characteristics of Bipolar Disorders Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in a persons mood, energy, and ability to function (Mental Help Net, 2004). Different from the normal ups and downs that everyone goes through, the symptoms of bipolar disorder are severe. They can result in damaged relationships, poor job or school performance, and even suicide. Bipolar Disorder is broken down into two types: Bipolar I: For a diagnosis of Bipolar I disorder, at least one manic or mixed episode clearly is or has been present (APA, 2000). DSM-IV Criteria for Bipolar I Disorder consists of: One or more Manic or Mixed episodes†¦show more content†¦Bipolar II: Similar to Bipolar I Disorder, there are periods of highs as described above and often followed by periods of depression. Bipolar II Disorder, however is different in that the highs are hypo manic, rather than manic (APA, 2000). In other words, they have similar symptoms but they are not severe enough to cause marked impairment in social or occupational functioning and typically do not require hospitalization in order to assure the safety of the person. A persons family history and genetics (diathesis) often play an important role in the greater likelihood of someone having bipolar disorder in their lifetime (Mental Help Net, 2004). Increased stress and inadequate coping mechanisms to deal with that stress may also contribute to the disorders manifestation. Bipolar disorder is most often experienced as a swing between a manic and a depressed mood, which may often be related to increased stress or other event in a persons normal life (Mental Help Net, 2004). Nearly anything can trigger a person to shift in mood, and sometimes there is no obvious trigger at all. Often, the first manic episode is triggered because of some external stressor the person has experienced. 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A Medium of Spirituality Free Essays

In most cases of media-oriented or group worship traditions, there are many different factors to consider such as the rhetorical methods and its implications and the mode in which these worship practices are addressed in the different traditions. Thus, the formation of such religious and worship practices come into context with the prevailing method of communications, especially in our modern context – the media. There are numerous facets of media and communications today that even spirituality attempts to plant itself on these kind of communicative phenomena. We will write a custom essay sample on A Medium of Spirituality? or any similar topic only for you Order Now As such, a specific worship experience, perhaps commonly prevalent today, is through the television. These religious shows are mostly based on the reading and interpretation of passages from the bible through some authoritative assumptions and conclusions. In his book, A History of Christian Spirituality, Urban Holmes categorizes the different modes of spirituality and worship traditions through a combination of four quadrants of a ‘circle of sensibility.’ The north polar end of the diagram is categorized as the rational or cognitive pole. The south polar of the same line is the emotional or affective side. The east and west is categorized as kataphatic (for speech) and apophatic (against speech), respectively. Thus, through the combination of these four different areas, we may find some mode of spirituality categorized as kataphatic-cognitive, apophatic-affective, among others. As such, the different traditions of worship are categorized whether it appeals to the emotions, the intellect, or the preference for written/oral traditions or not. An example of these different modes of spirituality or worship is through television shows that provide an interpretation of the scripture. These bible-oriented interpretative shows are then categorized, according to Holmes, on the speculative-kataphatic or cognitive-kataphatic. Since most readings require interpretation during these sessions, then most spirituality expressed in these is through a interpretative method coupled with some consideration with an intellectual understanding. Also, the methods in which these lectures are addressed are also taken into consideration since varying methods of rhetorical delivery may also affect such theological understanding. For example, a bible show that presents an argument on the goodness of God then meticulously chooses passages from the bible to support the argument (intellectual), and the interpreter then presents his or her own views regarding the subject matter. There are of course a number of speech methods that ultimately affect the interpretation of the viewers themselves as it appeals to an emotional construct of the person. The method of inquiry through interpretation may be too diverse to explain whether such interpretations affect the intellectual or emotional aspect. In terms of spirituality, these newer methods of theological proclamation then posit two problems: first is the authenticity of the spirituality produced conveyed through a non-personal approach (e.g. television instead of live or ‘practical’ worship practices). Second is the affectivity of such methods compared to a more personal understanding of theological ideologies. We must first then consider the authenticity of such spirituality in the given circumstance. Through television, the information conveyed by the scripture(s) becomes somehow stratified through a selective process of theological topics instead of a diverse and explorative manner of topic discussion. These shows are not wholly aimed for the purpose of elevating spiritual consciousness but rather, just like any other television program, are much more concerned on viewer ratings and the advantages to other competitions similar to that of the program. Thus, authenticity of the spirituality espoused in these shows is in question. Can these shows provide the same level of spirituality as that of a normative worship practice? In some way, the affectivity of these may cause some further theological discussion involving the scriptural context that appeals the intellect. However, it cannot be said that these shows are a main tenet of producing spirituality in such a way that these kinds of discussions are carefully structured in order to gain more viewers instead of gaining more theological understanding. How to cite A Medium of Spirituality?, Papers