Question

Rewrite the following choosing the correct word from each pair given in brackets:
The hydrocarbons containing at least one carbon to carbon _______________ (double/
triple) bond are called __________(alkenes/alkynes).They have the general formula
CnH2n..These were previously called ______________(olefins/paraffins). When this
compound is treated with ____________(bromine/lime) water, decolourisation occurs
because it is _____________(saturated/unsaturated). (Fill in the blank)

Answer 1

Hi ,

The answers of you fill up's are as follows

The hydrocarbons containing at least one

carbon to carbon ➡️DOUBLE⬅️ (double/

triple) bond are called ➡️ALKENES⬅️ (alkenes/

alkynes).They have the general formula

CnH2n..These were previously called

➡️ OLEFINES ⬅️(olefins/paraffins). When this

compound is treated with ➡️BROMINE⬅️

(bromine/lime) water, decolourisation occurs

because it is ➡️SATURATED⬅️(saturated

/unsaturated).

The Reason:

C =C and Carbon triple bonds are known as

unsaturated hydrocarbons,when these

unsaturated hydrocarbons reacts with

BROMINE water all double bonds converted

into single bonds (Saturated

hydrocarbons),thus brown coloured bromine

water gets decolorization.

Hope the information helps you.
Keep enjoying studies.