Concept explainers
Interpretation:
Given the formula of a cooking oil, balanced equation for combustion reaction of fat produced from burning of cooking oil has to be written. The amount of energy released has to be calculated in
Concept Introduction:
Balanced equation
- Every
chemical reaction obliges Law for conversion of mass which states the mass of total amount of the product should be equal to the total mass of the reactants. - The concept of writing a balanced chemical reaction is depends on conversion of reactants into products.
- First write the reaction from the given information.
- Then count the number of atoms of each element in reactants as well as products.
- Finally obtained values could place it as coefficients of reactants as well as products.
Standard heat of formation
Standard heat of formation of a compound is termed as quantity of heat absorbed or evolved at
Enthalpy and change in enthalpy
Enthalpy corresponds to heat content of the system and it is represented by ‘H’ and it is the sum of internal energy ‘E’ and product of volume and pressure,
Where,
Where,
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Check out a sample textbook solutionChapter 8 Solutions
General Chemistry: Atoms First
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- Alloys When a 58.8-g piece of hot alloy is placed in125 g of cold water in a calorimeter, the temperature ofthe alloy decreases by 106.1°C, while the temperature ofthe water increases by 10.5°C. What is the specific heat ofthe alloy?arrow_forwardWhen a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the temperature increases from 23.4 C to 26.9 C. The heat capacity of the calorimeter is 534 J/C, and it contains 675 mL of water. How much heat was produced by the combustion of the TNT sample?arrow_forwardThe equation for the combustion of butane, C4H10, is C4H10(g)+132O2(g)4CO2(g)+5H2O(g) Which one of the following generates the least heat? Why? a Burning one mole of butane b Reacting one mole of oxygen with excess butane c Producing one mole of carbon dioxide by burning butane d Producing one mole of water by burning butanearrow_forward
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