The Basic Law Of Chemistry
THE LAW OF CONSERVATION OF MASS (LAVOISER LAW)
Have
you ever considered a piece of iron left in the open air, and at one time we
will find, whether the iron has been turned into rust iron? If we weigh the
mass of iron before rusting with the rust of iron produced, it turns the mass
of iron rust is greater. Is that right? You often see wood or paper on fire, do
not you? Results obtained. If you weigh the ash then the ash mass is lighter
than the mass of wood or paper before it is burned. Is that right? From the
event, we feel it as a chemical reaction, there is a difference in the mass of
matter, before and after the reaction.
Antoine
Laurent Lavoisier (1743-1794) a French chemist has obtained a mass relationship
of substances before and after the reaction. Lavoisier weighed the substances
before weighing the reactions. It turns out the mass of substances before and
last always. Will the process material changes in the open process in order for
the available reaction products to be left behind by the system or something of
a tied environment (such as an iron-bonding process that binds oxygen from the
air) then as if the mass of the substance before and the last reaction becomes
unequal From the experiment Which Lavoisier undertook against liquid mercury
and oxygen to form red mercury oxide, Lavoiser came to the conclusion known as
the law of conservation of mass:
"The mass of the substances
before and last reaction is fixed".
PERFECT COMPARATIVE LAW (PROUST LAW)
Fixed
Rule of Law Comparison:
"A COMPETITIVE, COMPARISON OF
MASS THE ELEMENTS OF CONSTRUCTION ALWAYS STAY"
In an experiment of 1 gram of
hydrogen mixed with 8 grams of oxygen the result is 9 grams of water. And it
turns out 8 grams of oxygen can only react with 1 gram of hydrogen alone.
COMPARATIVE LAW (LEGAL DALTON)
"If the elements can form two
or more kinds of compounds, in which the mass of one element remains (equal),
then the ratio of the mass of the other elements in the compounds is an integer
and a simple"
COMPARATIVE LAW VOLUME (LAW GAY LUSSAC)
"At the same temperature and pressure,
the ratio of the volumes of the reacting gases and the volume of the reaction
gas is a ratio of simple and integers" In the reaction of the substance in
which the gas is present, the ratio of the reaction coefficient is equivalent
to the volume ratio if the reaction is carried out at the same temperature and
pressure.
HYPOTHESIS AVOGADRO
"Gases of the same volume, if measured at the same temperature and
pressure, contain the same number of molecules"
Avogadro
describes the Gay Lussac experiment by assuming the gas particles are not as
atoms, but as molecules. The ratio of the volumes of the reacting gases and the
gases of the reaction when measured at the same temperature and pressure
Will correspond to the ratio of the
number of molecules, will be equal to the ratio of the reaction coefficient
Please watch my video below.
Hy gita, i was read you're article about the basic law of chemistry, and i want ask you a question. Please answer. Thank you before. 😊
BalasHapusCarbon can combine woth hydrogen by a ratio of 3:1 to form methane gas. How much hydrogen must is take required to react with 900 gram of C in methane??
C: H = 3: 1
BalasHapusThen the mass of H = 1/3 x 900 grams
= 300 grams.
Why is there a Basic Law of Chemistry?
BalasHapusBecause in applying chemistry, we will be met with the term Stoikhimetri, the branch of chemistry science which understands the quantitative relationship of the composition of the chemicals and the reactions. So the quantitative relation of the elements in the compound and to the equation of chemical reactions including Lavoisier's Law (Mass Conservation Law), Proust's Law, Dalton's Law (Multiple Multiple Law), and Gay-Lussac law (Comparative Law of Volume).
HapusWhat conclusions can you draw from the five laws you explain?
BalasHapusThe basic laws of chemistry as discussed above have an important role in chemistry that is the foundation or basis of all calculations of the formula we use daily. Law - The law among others; The law of mass conservation, the law of fixed comparison, the law of multiple comparison, the law of volume comparison, the law of gas similarity, and the law of boyle
Hapus
BalasHapusExplain the difference of double comparison law with volume comparison law?
According to Gay Lussac , 2 volumes of hydrogen gas resistant to 1 volume of oxygen gas form 2 volumes of air vapor. In the air vapor forming reaction, for a perfect reaction, for every 2 volumes of hydrogen gas it takes 1 volume of oxygen gas, producing 2 volumes of air vapor.
Hapus"All gases reacted with the reaction product, determined at the same temperature and pressure or (T, P) are equal."
Whereas From two elements can be formed several compounds with different comparisons. For example, sulfur with oxygen can form SO2 and SO3 compounds. From the elements of hydrogen and oxygen can be formed compounds H2O and H2O2.
Dalton investigated the comparison of these elements in each compound and obtained a pattern of order. The pattern is expressed as a law of multiple comparison which reads:
"If two elements can form more than one compound, the mass of one element remains (equal) then the ratio of the mass of the other elements in the compounds is an integer and simple".
What is The Basic Law Of Chemistry with daily life?
BalasHapusIn everyday life we always encounter material changes. Part of the change of form is accompanied by the formation of new substances, partly just a change of place, shape or form. Both types of changes that we can encounter in the lighted candle. The melted candle is still the candle, which changes only its form. Burning wax will become a gas and some energy (heat and light). The burning candle is getting shorter and shorter. Is the candle gone? No. The wax does not disappear, but turns into new substances of gas, carbon dioxide and water vapor. If all combustion products are accommodated and weighed, the mass must be the same as the wax mass coupled with the oxygen masses used in the burning.
HapusChemistry continues to grow as human mastery of technology. Through a series of experiments and observations, the chemists put forward theories on the calculation of substances. After testing and verification, these theories eventually became the basic laws of chemistry.