Write balanced equations for the complete combustion of the following and find the enthalpy of...

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Write balanced equations for the complete combustion of the following and find the enthalpy of combustion values. Explain why hydrocarbons make good fuels? Methane Butane Octane Task 3 Addition reactions of alkenes. We have already looked at some addition reactions. Eg addition of water in the precence of a catalyst , bromine water addition of HBr and Markinovs rule. Peroxides have a –o-o- bond eg HOOH is hydrogen peroxide.
	
Document Preview: Task 2Write balanced equations for the complete combustion of the following and find the enthalpy of combustion values. Explain why hydrocarbons make good fuels?MethaneButaneOctaneTask 3Addition reactions of alkenes.We have already looked at some addition reactions. Eg addition of water in the precence of a catalyst , bromine water addition of HBr and Markinovs rule.Peroxides have a –o-o- bond eg HOOH is hydrogen peroxide. Peroxycarboxylic acids have a formula O=COOH     RWrite an equation to show how ethane is converted to ethan-1,2-diol using cold potassium permanaganate in alkaline conditionsWrite an equation to show the products of propene with hot acidified potassium dichromateWrite an equation to show how an epoxide is formed when propene reacts with an peroxy acid. Also what would the product be in the presence of water and an acid catalyst?Task 4Write a balanced equation for the reduction of propene with hydrogenWhat catalysts may be used for this reaction and explain how they work.Task 5Alkenes also react with Ozone. Write equations to show the products when 3.3-dimethyl pentene reacts with ozone and reduced with dimethyl sulphide

David · Accepted Answer

SolutionTTs041212_30633_13
Task 2 
CH4 (g) +2O2(g)   ---------  CO2(g) + 2 H2O (l)                ∆H = - 892kJ/mol     
C4H10(g) + 13/2 O2 (g)  ---------4 CO2(g) + 5 H2O (l)      ∆H = - 2880 kJ/mol 
C8H18(l) + 25/2 O2(g)   ---------  8 CO2(g) + 9 H2O (l)     ∆H = - 5461 kJ/mol
Hydrocarbons are composed of carbon and hydrogen atoms. Both carbon and hydrogen are 
easily oxidized by oxygen to give CO2 and H2O. So, when hydrocarbons undergo combustion in 
the presence of oxygen Carbon-hydrogen and carbon-carbon bonds are broken. Breakings of 
these bonds are exothermic reactions. Thus energy stored in hydrocarbons as bond energy is 
released on combustion which makes them a good fuel.
Task 3 
A.

Write balanced equations for the complete combustion of the following and find the enthalpy of combustion values. Explain why hydrocarbons make good fuels? Methane Butane Octane Task 3 Addition...

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