Skip to main content

Alkane

Alkane

alkane definition
www.ntsteacher.com
Alkane is also known as organic compounds or paraffin. One alkane compound contain one hydrogen and carbon atoms that are arranged in tree like structure . In alkane, all carbon atoms are single bonded. The general formula of alkane is CnH2n+2. Each carbon atom has our bonds and every hydrogen atom is bonded with carbon atom. Waxes are higher alkanes, in which carbon atoms are greater than 18. Alkanes are less reactive as compared to other alkenes and alkynes. Alkanes are mostly present in mostly natural gas and petroleum.  Alkanes are saturated hydrocarbons which contain only single bond and also known as structural because it contains only maximum numbers of hydrogen atoms. Alkanes compounds show three dimensional shape and covalent bond is present between alkanes compounds. In methane C-H bonds are directed to make tetrahedral structure at the angle of 109 degree. Alaknes does not show reaction with air but in heated form they show slow response in this regard.  Alkanes are used as fuel because, the reactions of alkanes are exothermic.  The chemical properties of alkanes compounds are similar but physical properties are various such as density or boiling point of compounds. Alkanes are also known as homologous.  Alkanes molecules easily make ring or chain like structure.  Alkane can react only in the form of gas for example methane react in the form of natural gas or petroleum.

Characteristics of Alkane

General Formul is CnH2n+2.
      1. Alkanes are present in Natural gas ant Petroleum.
2. Alkanes are Less Reactive
3. Alkanes have Low Melting Point
4. Alkanes are Soft
5. Alkanes are Crystalline in solids.
6. Alkane contain non polar molecules.
7. Alkanes are also less reactive to many laboratory reagents.
8. If the numbers of molecule increases then the melting and boiling points of alkane also increases.
9. Melting point increase due to strong intermolecular forces.If the weight of molecule is higher than the more 10. electrons are present.

                                                                                                               Writer M Sulaiman

Comments

Popular posts from this blog

Transpiration

Transpiration www.ntsteacher.com The removal or discharge of extra water from the body of plants is known as transpiration. This processes has great important for the removal of extra water. The rate of transpiration increase by every 10 degree centigrade increase in temperature. But, at the 40 to 45 degree centigrade, the stomata closed and rate of transpiration stop. Plants discharge water by different parts of body which are explain below, Lentcular Cells The cells which are present on stem between bark layers are known as lenticular cells. Only 1 to 2% water  release by lenticular cells. Cuticle Cells Cuticle cells are present on leaf and play important role in transpiration. Only 5 to 7% water release through these cuticle cells. Stomata Cells Stomata also play great role in transpiration. 90% water transport through these cells. Tobacco Plant contains 14000 stomata. 40% transpiration takes place through leaf. Guttation In small plants such as grass...