Joseph Louis Gay-Lsac | Science History Instute

Contents:

• JOSEPH-LOUIS GAY-LSAC
• JOSEPH LOUIS GAY-LSAC
• JOSEPH GAY-LSAC SUMMARY
• GAY-LSAC’S LAW
• GAY-LSAC'S LAW DEFN
• SCIENTIST OF THE DAY - JOSEPH LOUIS GAY-LSAC
• GAY LSAC’S LAW
• GAY LSAC’S LAW: FORMULA, DERIVATN & REAL-LIFE EXAMPL
• GAY-LSAC’S LAW: INTRODUCTN, FORMULA AND DERIVATN
• CATEGORY:JOSEPH LOUIS GAY-LSAC
• GAY-LSAC
• DEFINITIONS FOR GAY-LSACˌGEɪ LəˈSæKGAY-L·SAC
• GAY-LSAC'S GAS LAW EXAMPL

JOSEPH-LOUIS GAY-LSAC

Joseph-Louis Gay-Lsac, (born December 6, 1778, Sat-Léonard--Noblat, France—died May 9, 1850, Paris), French chemist and physicist who pneered vtigatns to the behavur of gas, tablished new techniqu for analysis, and ma notable advanc applied chemistry. Gay-Lsac was the elst son of a provcial lawyer and royal official who lost his posn wh the French Revolutn of 1789. Early his schoolg, Gay-Lsac acquired an tert science, and his mathematil abily enabled him to pass the entrance examatn for the newly found Éle Polytechnique, where stunts’ expens were paid by the state.

At Arcueil, Berthollet was joed by the ement mathematician Pierre-Simon Laplace, who engaged Gay-Lsac experiments on pillary orr to study short-range forc.

JOSEPH LOUIS GAY-LSAC

Charl as “Charl’s law, ” was the first of several regulari the behavur of matter that Gay-Lsac tablished.

JOSEPH GAY-LSAC SUMMARY

” Of the laws Gay-Lsac disvered, he remas bt known for his law of the bg volum of gas (1808). Gay-Lsac’s approach to the study of matter was nsistently volumetric rather than gravimetric, ntrast to that of his English ntemporary John Dalton.

Another example of Gay-Lsac’s fondns for volumetric rats appeared an 1810 vtigatn to the posn of vegetable substanc performed wh his iend Louis-Jacqu Thenard.

In a followg solo flight, Gay-Lsac reached 7, 016 metr (more than 23, 000 feet), thereby settg a rerd for the hight balloon flight that remaed unbroken for a half-century.

GAY-LSAC’S LAW

In 1805–06, amid the Napoleonic wars, Gay-Lsac embarked upon a European tour wh another Arcueil lleague, the Pssian explorer Alexanr von Humboldt. Gay-Lsac’s rearch together wh the patronage of Berthollet and the Arcueil group helped him to ga membership the prtig First Class of the Natnal Instute (later the Amy of Scienc) at an early stage his reer (1806).

Three years prevly Gay-Lsac had been appoted to the junr post of répétr at the Éle Polytechnique where, 1810, he received a profsorship chemistry that clud a substantial salary. Gay-Lsac’s appotment to the faculty of the Éle Polytechnique 1804 provid him wh laboratory facili the centre of Paris.

GAY-LSAC'S LAW DEFN

Rivalry between Gay-Lsac and Davy reached a climax over the de experiments Davy rried out durg an extraordary vis to Paris November 1813, at a time when France was at war wh Bra. Gay-Lsac prented a much more plete study of de a long memoir prented to the Natnal Instute on Augt 1, 1814, and subsequently published the Annal chimie. In 1815 Gay-Lsac experimentally monstrated that pssic acid was simply hydrocyanic acid, a pound of rbon, hydrogen, and nrogen, and he also isolated the pound cyanogen [(CN)2 or C2N2].

SCIENTIST OF THE DAY - JOSEPH LOUIS GAY-LSAC

Begng 1816, Gay-Lsac served as the jot edor of the Annal chimie et physique, a posn he shared wh his former Arcueil lleague François Arago. Still, Gay-Lsac did not pe cricism om lleagu for turng away om the path of “pure” science and toward the path of fancial ga.

Prevly a few c trials had been rried out to timate the strength of chlore solutns bleachg, but Gay-Lsac troduced a scientific rigour to chemil quantifitn and vised important modifitns to apparat.

GAY LSAC’S LAW

The prcipl of volumetric analysis uld be tablished only through Gay-Lsac’s theoretil and practil geni but, once tablished, the analysis self uld be rried out by a junr assistant wh brief trag. Gay-Lsac published an entire seri of Instctns on subjects rangg om the timatn of potash (1818) to the nstctn of lightng nductors. In 1848 (the year of revolutns) Gay-Lsac rigned om his var appotments Paris, and he retired to a untry hoe the neighbourhood of his youth that was stocked wh his library and a private laboratory.

” In a logy livered after his ath at the Amy of Scienc, his iend, the physicist Arago, summed up Gay-Lsac’s scientific work as that of “an gen physicist and an outstandg chemist. French chemist Joseph Louis Gay-Lsac proposed two fundamental laws of gas the early 19th century.

While one is generally attributed to a fellow untryman, the other is well known as Gay-Lsac’s law.

GAY LSAC’S LAW: FORMULA, DERIVATN & REAL-LIFE EXAMPL

In 1804 Gay-Lsac ma several darg ascents of over 7, 000 meters above sea level hydrogen-filled balloons—a feat not equaled for another 50 years—that allowed him to vtigate other aspects of gas. In 1808 Gay-Lsac announced what was probably his sgle greatt achievement: om his own and others’ experiments he duced that gas at nstant temperature and prsure be simple numeril proportns by volume, and the rultg product or products—if gas—also bear a simple proportn by volume to the volum of the reactants. Wh his fellow profsor at the Éle Polytechnique, Louis Jacqu Thénard, Gay-Lsac also participated early electrochemil rearch, vtigatg the elements disvered by s means.

Gay-Lsac’s law is a gas law which stat that the prsure exerted by a gas (of a given mass and kept at a nstant volume) vari directly wh the absolute temperature of the gas. Gay-Lsac’s law impli that the rat of the ial prsure and temperature is equal to the rat of the fal prsure and temperature for a gas of a fixed mass kept at a nstant volume. When a prsurized aerosol n (such as a odorant n or a spray-pat n) is heated, the rultg crease the prsure exerted by the gas on the ntaer (owg to Gay-Lsac’s law) n rult an explosn.

The law of Gay-Lsac is a variant of the ial gas law where the volume of gas is held nstant. To learn more about Gay-Lsac’s law and other gas laws, such as Charl’ law, register wh BYJU’S and download the mobile applitn on your smartphone.

GAY-LSAC’S LAW: INTRODUCTN, FORMULA AND DERIVATN

Gay-Lsac's law is an ial gas law which stat that at nstant volume, the prsure of an ial gas is directly proportnal to s absolute temperature ( Kelv). Other ways of wrg Gay-Lsac's law make easy to solve for the prsure or temperature of a gas:.

Many scholars nsir Gay-Lsac to be the first to formulate Amonton's law of prsure-temperature. " For stance, Gay-Lsac stated that all gas have the same mean thermal expansivy at nstant prsure and temperature. Gay-Lsac is sometim creded as beg the first to state Dalton's law, which says that the total prsure of a gas is the sum of the partial prsur of dividual gas.

Gay-Lsac is well known to morn chemists for two laws, one relatg the volume of a gas to s temperature (volume creas learly wh temperature), and the send, lled the law of bg volum, which stat that when two gas be, their volum are the rats of small whole numbers.

CATEGORY:JOSEPH LOUIS GAY-LSAC

The law of bg volum uld be ed to support John Dalton's atomic theory, published the very same year, for if water nsists of two atoms of hydrogen and one of oxygen, then one might well expect that you would need two volum of hydrogen for every one of oxygen (assumg that equal volum of gas nta equal numbers of particl, and Amao Avogadro would offer this up as his own law, Avogadro's hypothis, 1811) the non-chemist, Gay-Lsac's reer as a balloonist might be of more tert.

Wh fellow chemist Jean-Baptiste Bt, Gay-Lsac ma a balloon ascent of some 4 1804, llectg atmospheric sampl all the way, and the next year he ma a solo ascent and went even higher, settg an altu rerd of some 23, 000 feet that would stand for another 60 years. He also termed that the posn of the atmosphere do not change wh 1867, Louis Figuier published an image of the Bt/Gay-Lsac ascent that has proved que endurg balloong lore (send image); the illtratn has been much pied, even appearg on a tea rd (first image). Gay-Lsac’s law is a gas law that stat the prsure of a gas vari directly wh temperature when mass and volume are kept nstant.

GAY-LSAC

The creased energy means the molecul lli wh the walls of the ntaer wh more force, meang higher Gay Lsac’s Law is also sometim lled Amonton’s Law.

DEFINITIONS FOR GAY-LSACˌGEɪ LəˈSæKGAY-L·SAC

Gay Lsac’s Law FormulaGay-Lsac’s law giv a formula where prsure and temperature are related to a nstant when volume and mass/mol are held nstant.

This experiment isn’t a perfect reprentatn of Gay Lsac’s law but is a good example of prsure chang due to temperature. In Gay Lsac’s experiments, he had a rigid ntaer wh a set ’s Law Example ProblemsProblem: You are tryg to dispose of an aerosol ntaer that has a prsure of at.

(Assume the volume of the tire do not change if go flat)Worked Solutn: We are lookg at a tire, so the number of mol and volume is nstant which means we n e Gay-Lucss’s and. In an attempt to measure the magic field of the earth at high elevatn, Gay-Lsac held the world rerd for the hight balloon flight for about fifty years.

GAY-LSAC'S GAS LAW EXAMPL

Gay Lsac’s Law Practice Problem Solutns1: crease; 2: Other Gas LawsIal Gas LawBoyle’s LawCharle’s LawAvogadro’s LawDalton’s LawCombed Gas Law. Gay Lsac’s Law Practice Problem Solutns1: crease; 2: Other Gas LawsIal Gas LawInstments to Measure Gas PrsureBoyle’s LawCharle’s LawAvogadro’s LawDalton’s LawCombed Gas Law.

Gay Lsac’s law stat that the prsure exerted by a gas is directly proportnal to s absolute temperature when kept at nstant mass and volume.

Gay Lsac’s law n be mathematilly reprented as, P α T → P/T = K Here, P → Prsure beg exerted by the gas T → Absolute temperature of the gas K → nstant Gay Lsac’s Law The relatnship between the absolute temperature of gas and prsure exerted by at nstant mass and volume is mentned the diagram below.