Write a balanced chemical equation with state symbols for the following reactions

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Question: Write a balanced chemical equation with state symbols for the following reactions.

  1. Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
  2. Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

Answer:

  1. BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)
  2. NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

Write the balanced equation for the following chemical reactions.

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    Question 2: Write the balanced equation for the following chemical reactions.

    1. Hydrogen + Chlorine → Hydrogen chloride
    2. Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride
    3. Sodium + Water → Sodium hydroxide + Hydrogen

    Answer:

    1. 2H2 + Cl2 → 2HCl
    2. BaCl2 + Al2(SO4)3 → BaSO4 + 2AlCl3
    3. 2Na + 2H2O → 2NaOH + H2

    class X

    Why should a magnesium ribbon be cleaned before burning in air?

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    Why should a magnesium ribbon be cleaned before burning in air?

    Why should a magnesium ribbon be cleaned before burning in air?

    Answer:

    Magnesium is a very reactive metal. When stored, it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned with sandpaper to remove this layer so that the underlying metal can be exposed to air.