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The Language Of Chemistry

Question
ICSEENICH9009862
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What information do the following chemical equations convey? Mg + 2HCl → MgCl2+ H2

Solution

This equation conveys the following information:

 

  1. Magnesium reacts with hydrochloric acid to form magnesium chloride and hydrogen gas.
  2. 24 g of magnesium reacts with 2(1 + 35.5) = 73 g of hydrochloric acid to produce (24 + 71), i.e. 95 g of magnesium chloride.
  3. Hydrogen produced at STP is 22.4 litres. 

Some More Questions From The Language of Chemistry Chapter

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

What is the valency of :

nitrogen in the following compounds:

(i) N2O3 (ii) N2O5 (iii) NO2 (iv) NO

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