The link between the number of carbon atoms in a fuel with the amount of energy it releases :: GCSE Chemistry Coursework Investigation

The link between the number of carbon atoms in a fuel with the amount of energy it releasesAlcohols slackly belong to compounds whose corpuscles are based on drawing strings of carbon atoms. They usu all toldy contain one oxygen atom, which isjoined to a carbon atom by a singular bond. This makes them differentto other compounds. The oxygen atom is joined to the hydrogen atom aswell as the carbon atom, which makes the oxygen a part of a hydroxylgroup. These atoms are generally a part of a hydrocarbon chain. Thesealcohols can take away water from the body, in which a hydrocarbonchain has replaced a hydrogen atom. Alcohols have a general structureof CnH2n+1OHThe aim of this investigation is to see the link between the numbersof carbon atom in a fuel with the amount of energy it releases. Therewould be a change in the amount of energy given off that is gettinggreater, the much carbon atoms in the fuel, the more there are morebonds to be broken and variationed, thus producing more en ergy. In achemical reaction, bonds in the reactant molecule are broken and newones are formed. Atoms are rearranged. Energy has to be put in tobreak bonds, and energy is given out when bonds are formed. When the bring energy put in is greater than the energy put out, the substancecools down (it is endothermic). This is expressed as +ve (deltapositive). If the total energy put in is less(prenominal) than the energy created,then the substance warms up (it is exothermic). This is expressed as -ve (delta negative).I will investigate eight different alcohols using an alcohol or purposeburner, to measure the energy change during burning them by measuringthe change in temperature of some water held by a container. Thiscontainer must have a value of specific screw up capacity so I couldcalculate heat transferred to it as well. Probably the most conductivecontainer available for use in the classroom is a calorimeter. As wellas not wasting energy in the heating of the container, I could al sotry to stop heat from escaping the top and edges of the container bycovering it with a fitting lid. I will try to prevent the wind fromblowing the flames to a different direction so all the windows must beshut.HYPOTHESISMore energy is released as more bonds are formed, below is the list ofapproximate energy required to break and form all bond involved inburning alcoholsTYPE OF BOND ENERGY REQUIRED TO BREAK THE BOND (j)