Some experimental data on the heats of combustion of benzoic acid and carbon (graphite)

The heats of combust ion of five h ighl y purified long-chai n liquid h.vdrocil.rbon~ "'ere meas ured ",ith a bomb ca lorimeter . The calor imetric data y ield t he folloll'ing \'a lues for the h eat~ of combu s tiOIl , -t1 f1 cO(25° e), of the li quid hydrocarbon wilh gaseo us Ox.'·gE' 1l t o form gaseous car bon dioxide and liqu id water ; .l k ii ocalorie = 4.1840 kilo jo ul e. It i~ sholl' n th a, t , in th e liquid as \\'('11 as in the gascous s tat e, t he inc rc mc nt in the h(' a t of co mbu s ti o n (a nd hence in the heat of for matio n) prr (' H , group added in the li-alk.\·1 sid e chain is a co ns ta.nt excepL fo r the fi rst (\\'0 l1l e mben' of the . 'ie r ie s, and th a t (his incre me nt ha~ lh(' same value for eac h o f (hese s('r ies of com p ounds.

“…The procedure is similar to t hat ll sed in previous investigations [9,10,11,12]. The samples were sealed in weighed glass ampoules to prevent evaporation before the combustion period.…”

Section: Methods and Appar Atusmentioning

confidence: 99%

Heats of combustion of liquid n-hexadecane, 1-hexadecene, n-decylbenzene, n-decylcyclohexane, n-decylcyclopentane, and the variation of heat of combustion with chain length

Fraser¹,

Prosen²

1955

“…The same method and apparatus were used as in the investigations recently reported from this laboratory [4,5,6,7]. The calorimeter svstems C and D are described in detail in section III-2 of reference [4], in sections V and VII-l of refer ence [6], and in sections V and VI-l of reference [7].…”

Section: Unit Of Energy Molecular Weights Etcmentioning

confidence: 99%

“…The calorimeter svstems C and D are described in detail in section III-2 of reference [4], in sections V and VII-l of refer ence [6], and in sections V and VI-l of reference [7].…”

Section: Unit Of Energy Molecular Weights Etcmentioning

confidence: 99%

Heats of combustion of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, n-propylbenzene, and styrene

Prosen¹,

Gilmont²,

Rossini³

1945

Self Cite

The heats of combustion of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, n -propylbenzene, and styrene were measured with a bomb calorimeter.The following values were obtained for the heat of combustion, at 25° C and constant pressure, of the liq uid hydrocarbon in gaseous oxygen to form gaseous carbon dioxide and liquid water, with all the r eactants and products in their thermodynamic standard reference states, in international kilojoules per mole: Benzene,3267.09 ±0043; tolU ene, 3909.31 ± 0 049; ethylbenzene, 4564.09 ± 0.72 ; o-xylene, 4552.10 ± 1.02 ; m-xylene, 4551.10 ± 0.62; p-xylene'w4552.09 ± 0.91 ; n-propylbenzene, 5217.37 ± 0.68 ; styrene 4394.14 ± 0.82.ith the factor 1/4.1833, the corresponding values in kilocalories per mole are b enzene, 780.98

“…Including the new data reported by Prosen and Rossini [4], which are based on measurements with electric energy, the values (and assigned uncertainties [7]) for the heat of reaction (1) are as follows:…”

Section: Summary Of the Data On Graphitementioning

confidence: 99%

“…As a result of a recalculation of the data previously r eported on the heats of combustion of graphit e and diamond [1,2, 31/ together with consideration of some new data on graphite [4], revised " best" values have been obtained for the heat of formation of carbon dioxide and for th e heat of transition of graphite into diamond. 2 …”

mentioning

confidence: 99%

Heat of formation of carbon dioxide and of the transition of graphite into diamond

Prosen¹,

Jessup²,

Rossini³

1944

Self Cite

A r ecalculation of data previously reported on the heats of combustion of graphite and diamond, together with consideration of some new data on graphite, yielded the following selected "best" values for the heats of combustion of graphite and diamond and of the transition of graphite into diamond:C (c, graphite)+02 (gas) = C02 (gas); .0J:l208' lS = -393,447 ± 45 into j/mole = -94,051.8 ± 10.8 cal/mole C (e, diamond) + 0 2 (gas) = C02 (gas); l:"H29S.16 = -395,343 ± 96 into j/mole = -94,505