Chemistry Answers

1.Addition of HBr to H2C=CH2

2.Addition of Br2 to Ethyne

3.CH3CH=CHCH3 + Cl2

4.Cyclobutene + Br2

5. + I2

Illustrate  the different structural  isomers  of  the following molecules.

1. C6H14

2. C5H11Cl

3. C7H7I

containing benzene

ring

4. C4H8O

5. C4H8O2

a man was found to have 6 mmol/litre of lead in his blood, if 1000mmol =1 mol

and the man has 5 litres of blood in him. how many grams of lead will he have in his blood

Which of the following aqueous solutions will produce a blue precipitate with aqueous sodium hydroxide?

magnesium carbonate, MgCO3/ forms a hydrate containing 39.1% water of hydration. Calculate the formula of this hydrate containing 39.1 % water of hydration. Calculate the formula of this hydrate

Give balanced equation for the following reactions:

a. Zinc to sodium zincate -using an alkali

b. Water gas to hydrogen – industrially

c. Sodium aluminate from aluminium

d. Hydrogen from boiling water using a divalent metal

e. Hydrogen from Steam using a metal and the reaction is

reversible

f. Balanced equation for the laboratory preparation of

hydrogen

g. Steps followed in Bosch process

h. Magnesium chloride from HCl

i. Water gas from water

j. Aluminium sulphate from aluminium

How many L of 4.0 m solution can be made with 132g of Nacl?

Calculate the mass of pb that will be deposited from an aqueous solution of pb 2 salt by the same quantity of electricity that deposit it 2.70g cu from an aqueous solution of cu 2 salt

Base from what you understand from the discussions and examples in your module, give one important application of understanding the mole concept particularly in the field of Science. Give your answer in this manner.

Field of Science (examples, medicine, Chemistry etc.) = Practical

Application (pls be specific and explain. Give example if possible.

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3–