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Questions and Answers
What is the balanced chemical equation for the reaction between barium chloride and sodium sulphate?
What is the balanced chemical equation for the reaction between barium chloride and sodium sulphate?
- BaCl2(aq) + Na2SO4(s) → BaSO4(aq) + 2NaCl(aq)
- BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq) (correct)
- BaCl2(s) + Na2SO4(aq) → BaSO4(aq) + 2NaCl(aq)
- BaCl2(aq) + Na2SO4(aq) → BaSO4(aq) + 2NaCl(s)
What is the product formed when sodium hydroxide solution reacts with hydrochloric acid solution?
What is the product formed when sodium hydroxide solution reacts with hydrochloric acid solution?
- Sodium Chloride Solution (correct)
- Sodium Hydroxide
- Water
- Hydrochloric Acid
What is the state symbol for Barium Sulphate in the first reaction?
What is the state symbol for Barium Sulphate in the first reaction?
- Liquid (l)
- Aqueous (aq)
- Solid (s) (correct)
- Gas (g)
What is the state symbol for Sodium Chloride in the second reaction?
What is the state symbol for Sodium Chloride in the second reaction?
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What type of reaction is observed in the second chemical equation?
What type of reaction is observed in the second chemical equation?
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Study Notes
Cleaning Magnesium Ribbon
- Magnesium is a highly reactive metal that reacts with oxygen to form a layer of magnesium oxide (MgO) on its surface.
- The magnesium oxide layer is stable and prevents further reaction of magnesium with oxygen.
- To remove the magnesium oxide layer, the magnesium ribbon is cleaned with sandpaper, allowing the underlying metal to react.
Balanced Chemical Equations
- Hydrogen reacts with chlorine to form hydrogen chloride: H₂ + Cl₂ → 2HCl
- Barium chloride reacts with aluminium sulphate to form barium sulphate and aluminium chloride: 3BaCl₂ + Al₂(SO₄)₃ → 2AlCl₃ + 3BaSO₄
- Sodium reacts with water to form sodium hydroxide and hydrogen: 2Na + 2H₂O → 2NaOH + H₂
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