Chapter 3-5 Student Chemistry Worksheet - Class X, Central Board Of Secondary Education Page 8

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Chapter 4 - Carbon and its Compounds
Formative Assessment Manual for Teachers
Q5. What is the general name of the functional group of the product formed?
Q6. Give one use of the group of compounds to which the product formed belongs.
Q7. What is the name given to this type of reactions.
Q8. Write a chemical equation for the reaction that has taken place.
Suggested Remediation:
Some students may find it difficult to understand the formation of an ester and linkages
in the ester group when carboxylic acid and alcohol react with each other. The teacher
may explain this by depicting the removal of water from the reactants on the board and
making the students recall that concentrated sulphuric acid is a dehydrating agent, i.e
it removes water. The teacher may even show charring of a paper when conc. sulphuric
acid drops fall on it.
As an extension to the above activity the teacher may help the students appreciate the
reverse reaction of esterification, i.e. saponification.
Some students may find it difficult to give reason for heating the reaction mixture on a
water bath, help them in understanding this by -
1.
making them compare the boiling points of water, alcohol and acetic acid
2.
drawing their attention towards the fact that these organic compounds are highly
inflammable and undergo combustion to produce CO
and water
2
Carbon and its Compounds
Chapter 4
Assessment Technique: Data based worksheet
Objectives: To enable the students to:
learn that a group of compounds with same functional group are called Homologues
discover that in a homologous series the difference in the formula of two adjacent
compounds is of ‘-CH
’ and difference in molecular mass is ‘-14 u’
2
appreciate that chemical properties of members of a Homologous series are similar,.
formulate the general formula for a homologous series.
Predict the next members of a Homologous series.
38

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