1) draw the stucture of ethanoic acid ?

2)write chemical eqn for what happens when

a) sodium metal is added to ethanoic acid

b)solid sodium carbonate added to ethonoic acid

c)ethonoic acid reacts with dilute solution of sodium hydroxide.

2)the atomic number of an element is 16 predict

a)the number of valance electron in an atom

b)its valence

c)its group number

d)it is metal or nonmetal

e)the nature of oxide formed by it

f)the formula of its chloride

3)when soap is added to water . why are micellie not form when soap is added to ethanol.

4)explain isomeris? state any 4 charectersics of isomeres ,draw the stucture of possible isomeres of butane .

5)how many covalent bonds are there in molecule of ethane

6)what is a soap? why are soaps not sutable for washing cloths when water is hard

7)explain the action of soap in removing spotts from apiece of cloth

Ethanoic acid is CH₃COOH. 

CH₃COOH + Na →CH₃CH₂COONa + (1/2)H₂

CH₃COOH + Na₂CO₃→CH₃COONa + H₂O +CO₂

CH₃COOH + NaOH→CH₃COONa + H₂O

The element having atomic number 16 has the electronic configuration 2, 8, 6. The number of valence electrons are 6 and it has a valency of 2. The group number is 16. It is a non-metal and it forms acidic oxide. It is the element sulphur and can form SCl₂and S₂Cl_2.

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