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The Language Of Chemistry

Question
ICSEENICH9009861
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What information does the following chemical equation convey?

Zn + H2SO4 → ZnSO4+ H2

Solution

This equation conveys the following information:

 

  1. The actual result of a chemical change.
  2. Substances take part in a reaction, and substances are formed as a result of the reaction.
  3. Here, one molecule of zinc and one molecule of sulphuric acid react to give one molecule of zinc sulphate and one molecule of hydrogen.
  4. Composition of respective molecules, i.e. one molecule of sulphuric acid contains two atoms of hydrogen, one atom of sulphur and four atoms of oxygen.
  5. Relative molecular masses of different substances, i.e. molecular mass of

Zn = 65

H2SO4 = (2+32+64) = 98

ZnSO4 = (65+32+64) = 161  

H2 = 2

6. 22.4 litres of hydrogen are formed at STP.

Some More Questions From The Language of Chemistry Chapter

Complete the following table.

 

 

 Acid Radicals 

 

Basic Radicals

Chloride

Nitrate

Sulphate 

Carbonate

Hydroxide

Phosphate

Magnesium

MgCl2

Mg(NO3)2

MgSO4

MgCO3

Mg(OH)2

 Mg3(PO4)2

Sodium

 

 

 

 

 

 

Zinc

 

 

 

 

 

 

Silver

 

 

 

 

 

 

Ammonium

 

 

 

 

 

 

Calcium

 

 

 

 

 

 

Iron (II)

 

 

 

 

 

 

Potassium

 

 

 

 

 

 

 

 

Sodium chloride reacts with silver nitrate to produce silver chloride and sodium nitrate

  1. Write the equation.
  2. Check whether it is balanced, if not balance it.
  3. Find the weights of reactants and products.
  4. State the law which this equation satisfies. 

What information does the following chemical equation convey?

Zn + H2SO4 → ZnSO4+ H2

What information do the following chemical equations convey? Mg + 2HCl → MgCl2+ H2

What are polyatomic ions? Give two examples.

Name the fundamental law that is involved in every equation.

What is the valency of :

fluorine in CaF2 

What is the valency of :

sulphur in SF6

What is the valency of :

phosphorus in PH3 

What is the valency of :

carbon in CH4

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