write the electron dot structure of ethane

Question 58: Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid. (a) What are hydrocarbons ? (b) (i) Aldehyde group (e) Allotropes of X: Diamond and buckminsterfullerene. Catenation is the ability of an atom to form bonds with other atoms of the same element. Solution : Solution : When the dirty cloth is agitated in soap solution, the oily dirt particles entrapped by soap micelles get dispersed in water and the cloth gets cleaned. (b) Name the functional group present in CH3—C ≡ CH. What type of functional group is present in this organic compound ? C5H12 How do synthetic diamonds differ from natural ones ? Solution : (c) What is compound Z ? (b) The form of carbon which is used as a lubricant at high temperature is…………………………… (f) Graphite, Question 63: (a) Buckminsterfullerene is an allotrope of carbon containing clusters of 60 carbon atoms joined together to form spherical molecules. Methanol damages the optic nerve causing permanent blindness in a person. (b) State two characteristics of a homologous series. False, Question 25: Lakhmir Singh Chemistry Class 10 Solutions Page No:222, Question 26: Give the name of another member of this homologous series. View Answer. Using electron-dot diagrams which show only the outermost shell electrons show how a molecule of oxygen O2 is formed from two oxygen atoms. Add 2 ml of dilute ethanoic acid to the boiling tube (through a thistle funnel). Ethanol is used as an additive in petrol. Alkynes: (e) Name the lower homologue of compound B which is used in preserving biological specimens. (a) HCOOH (b) CH3COOH Consider the following organic compounds : Solution : Homologous series of alkanes: Methane, CH4; Ethane, C2H6; Propane, C3H8; Butane, C4H10; Pentane, C5H12 Would you be able to check whether water is hard by using a detergent ? (a) What is buckminsterfullerene ? Also write the chemical equation of the reaction involved. (b) What is allotrope A ? (c) Allotrope C: Diamond So, this experiment proves that when ethanoic acid reacts with sodium carbonate, then carbon dioxide gas is evolved. Name the salt X and gas Y. Question 19: (a) What happens when methane (natural gas) burns in air ? (a) (i) Ammonium Question 45: Solution : Switch. For exampe: methane (CH4), ethane (C2H6), ethene (C2H4), and ethyne (C2H2), all are hydrocarbons as they are made up of only two elements: carbon and hydrogen. Question 4: Which of the following molecule/species is having maximum number of lone pairs in Lewis-dot structure? Question 6: (b) Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnH2n+1OH. (b) Which compound contains a carboxyl group ? 14. Write the name of another member of this homologous series. arrangement only by sharing of electrons. Propanone, Question 8: (k) The IUPAC name of ethylene is………………. (c) What type of reaction occurs when A is converted into B ? Acids react with alcohols to form sweet smelling esters. Write equation of the reaction involved. (a) An ‘atom’ or ‘a group of atoms’ which makes a carbon compound (or organic compound) reactive and decides its properties (or functions) is called a functional group. Write the structural formula of propene. (d) The organic acid present in vinegar is……………….. (a) Element E: Carbon Solution : (ii) C20H40 (iii) C20H38, Question 69: Write. Solution : (b) Which compound on treatment with cone. Alcohol group, -OH. (c) C7H14; Lakhmir Singh Chemistry Class 10 Solutions Page No:266. Though most of the soap separates out on its own but some of it remains in solution. This shows that it is made up of carbon only like diamond and graphite. (a) A compound made up of hydrogen and carbon only is called a hydrocarbon (Hydrogen + Carbon= Hydrocarbon). Solution : Question 57: (i) CH3COOH (ii) CH3CH2CHO (iii) C2H5OH (iv) CH3COCH2CH3 A solid element X has four electrons in the outermost shell of its atom. Solution : Carbon. (e) C7H14; An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit ? Explain the reaction Solution : Nickel or palladium can be used as catalyst in the hydrogenation of unsaturated compounds. Ethene decolourises bromine water because ethene is an alkene. (b) What is the difference in the molecular mass of any two adjacent homologues ? Solution : Due to this, the cells stop functioning normally. (iii) Z (natural gas). (c) Detergents are better cleansing agents than soaps because they do not form insoluble calcium and magnesium salts with hard water, and hence can be used for washing even with hard water. Write a chemical equation to illustrate your answer. (b) Give any two differences between the properties of diamond and graphite. Name its homologous series. [AI 2015] Answer/Explanation. (ii) It leads to the formation of an extremely poisonous gas called carbon monoxide. Each carbon atom in a graphite layer is joined to other three carbon atoms by strong covalent bonds to form flat hexagonal rings. The hydrocarbon ends of the soap attach to the oily dirt particles and entrap them at the centre of the micelle. Solution : (c) Which of the two is better for our health : butter or vegetable oil ? (c) is better than soap for washing clothes when the water is hard. Question 48: 1 answer. and 2-methylpropane; LPG. Calculate the total valence electrons in the molecule. Write the names and structural formulae of the aldehyde and ketone represented by this molecular formula. Explain the cleansing action of soap in the presence of sunlight addition of hydrogen to unsaturated... 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