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PART - 2 CH - 8 Organic Chemistry: Some Basic Principles and Techniques — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryPART - 2 CH - 8 Organic Chemistry: Some Basic Principles and Techniques2 Marks
Question
What do you meant by homologous series? Explain with example.
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Answer

The series of organic compound in which a specific functional group is present and the chemical properties of all compounds are same and these molecular formula have difference of $> CH _2$ are known as homologous series and the members of this series are homologue of each other.
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Similar questions

Compound with carbon-carbon double bond, such as ethylene (C2H4) and hydrogen in a reaction is called hydrogenation.

$\text{C}_2\text{H}_4(\text{g})+\text{H}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ \text{C}_2\text{H}_6(\text{g})$

Calculate enthalpy change for the reaction using the following combustion data:

$\text{C}_2\text{H}_4(\text{g})+3\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ }\ 2\text{CO}_2(\text{g})+2\text{H}_2\text{O(g)};$ $\Delta\text{H}=-1401\text{kJ/ mol}$

$\text{C}_2\text{H}_6(\text{g})+\frac{7}{2}\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ 2\text{CO}_2(\text{g})+3\text{H}_2\text{O(l)};$ $\Delta\text{H}=-1550\text{kJ/ mol}$

$\text{H}_2(\text{g})+\frac{1}{2}\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ \text{H}_2\text{O(l)};$ $\Delta\text{H}=-286.0\text{kJ/ mol}$

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Calculate the energy associated with the first orbit of He. What is the radius of this orbit?
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(i) Bond length, depends on hybridization Explain.
(ii) The bond enthalpy of $F - F$ is less than that of Cl-Cl, why?
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How many molecules of SO2 are present in 11.2 L at STP?
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A 25 watt bulb emits monochromatic yellow light of wavelength of 0.57 µm. Calculate the rate of emission of quanta per second.
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Acetic acid (ethanoic acid) and hydrochloric acid react with KOH solution. The enthalpy of neutralisation of ethanoic acid is -55.8kJ mol-1 while that of hydrochloric acid is -57.3kJ mol-1
Can you think of why are these different?
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Identify the redox reactions out of the following reactions and identify the oxidising and reducing agents in them.
$\text{Fe}_2\text{O}_3\text{(s)}+3\text{CO(g)}\xrightarrow{ \ \ \ \Delta\\\ \ \ \ }2\text{Fe(s)}+3\text{CO}_2\text{(g)}$
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Arrange the elements with the following electronic configurations in order of increasing electron gain enthalpy.
  1. 1s2 2s2 2p5
  2. 1s2 2s2 2p4
  3. 1s2 2s2 2p3
  4. 1s2 2s2 2p6 3s2 3p4
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Classify the following as homogeneous or heterogeneous equilibria:
  1. $2\text{SO}_2(\text{g})+\text{O}_2(\text{g})\rightleftharpoons2\text{SO}_3(\text{g})$
  2. $2\text{Mg(s)}+\text{O}_2(\text{g})\rightleftharpoons2\text{MgO(s)}$
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Predict the nature of solution when NH4NO3 undergo hydrolysis.
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