Thermo dynamics

THERMODYNAMICS

name of the chapter: Thermodynamics

Content Provider: FIITJEE

Lecturer from FIITJEE

Introduction based on NCERT :

Chemical energy stored by molecules can be released as heat during chemical reactions when a fuel like methane, cooking gas, or coal burns in the air. The chemical energy may also be used to do mechanical work when a fuel burns in an engine or to provide electrical energy through a galvanic cell-like dry cell. Thus, various forms of energy are interrelated and under certain conditions, these may be transformed from one form into another. The study of these energy transformations forms the subject matter of thermodynamics. The laws of thermodynamics deal with energy changes of macroscopic systems involving a large number of molecules rather than microscopic systems containing a few molecules. Thermodynamics is not concerned about how and at what rate these energy transformations are carried out but is based on the initial and final states of a system undergoing the change. Laws of thermodynamics apply only when a system is in equilibrium or moves from one equilibrium state to another equilibrium state. Macroscopic properties like pressure and temperature do not change with time for a system in an equilibrium state

Embedded Pdf:

Comments

Purification Characterisation of Organic Compounds class 11

Purification Characterisation of Organic Compounds name of the chapter: Purification Characterisation of Organic Compounds Content Provider: FIITJEE Lecturer from FIITJEE simple notes: Organic compounds extracted from a natural source or synthesized in the laboratory require purification. Various methods are used for purification and are based on the nature of the compound and the impurity present in it. The purity of a compound is ascertained by determining its melting point or boiling point or by chromatographic and spectroscopic techniques. Fraction distillation can be defined as a process where the separation of a mixture takes place. A mixture of various components such as chemical components can be easily vaporized by heating them to a temperature more than their boiling point and forming different fractions. embedded pdf:

acids bases and salts pptx

Acids Bases and Salts PPT name of the chapter: acids bases and salts Content Provider: Student ( Dharani ) Acid Bases and Salts introduction by NCERT : You already know that acids are sour in taste and change the colour of blue litmus to red, whereas, bases are bitter and change the colour of the red litmus to blue. Litmus is a natural indicator, turmeric is another such indicator. Have you noticed that a stain of curry on a white cloth becomes reddish-brown when soap, which is basic in nature, is scrubbed on it? It turns yellow again when the cloth is washed with plenty of water. You can also use synthetic indicators such as methyl orange and phenolphthalein to test for acids and bases. In this chapter, we will study the reactions of acids and bases, how acids and bases cancel out each other’s effects and are much more interesting things that we use and see in our day-to-day life. Do Y...

Hydrocarbon class 10 & 9 carbon and its compunds

Hydrocarbons What is a hydrocarbon? * In organic chemistry, a hydrocarbon is a compound consisting primarily of carbon and hydrogen along with other elements added on as functional groups Few examples of Hydrocarbons are *Methane *Ethane *Ethanol *Propane *Butane Types of hydrocarbons: *The hydrocarbons can be classified as *Open chain or acyclic hydrocarbons *Cyclic hydrocarbons *Acyclic hydrocarbons have a linear structure and do not form rings *Cyclic hydrocarbons have a structure like a ring Acyclic Hydrocarbons: * Organic compounds in which all the carbon atoms are linked to one another to form an open chain are called Acyclic Hydrocarbons. *These can be saturated or unsaturated Saturated Hydrocarbons: *The Hydrocarbons where the carbon atoms are linked by only single bonds are called saturated Hydrocarbons. *They are also alkanes and parrafins Unsaturated Hydrocarbons * The carbon ...

FIITJEE Chemistry

Search This Blog