Podcast Beta
Questions and Answers
How do non-metals react with hydrogen to form an acid? Give an example.
Non-metals react with hydrogen to give an acid through the equation 'Hydrogen + Non-metal → Acid'. For example, H2 + Cl2 → 2HCl forms hydrochloric acid.
What is the result of the reaction between acidic oxides and water?
Acidic oxides react with water to form an acid, as seen in the equation 'Acidic oxide + Water → Acid'. For example, CO2 + H2O → H2CO3 produces carbonic acid.
Describe how non-volatile acids can interact with salts to produce volatile acids.
Non-volatile acids can displace volatile acids from their salts upon heating, illustrated by the reaction 'Normal salt + Sulphuric acid → Acid salt + Displaced volatile acid'. For example, KNO3 + H2SO4 produces KHSO4 and HNO3.
What types of oxides do not produce an acid when reacting with water? Provide examples.
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Provide an example of an acidic oxide and the acid it forms when dissolved in water.
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Study Notes
Acids
From Non-metals
- Non-metals react with hydrogen to form acids.
- Chemical reaction: Hydrogen + Non-metal → Acid
- Example reactions:
- H2 + Cl2 → 2HCl (hydrochloric acid)
- H2 + I2 → 2HI (hydriodic acid)
From Acidic Oxides
- Acidic oxides react with water to produce acids.
- Chemical reaction: Acidic oxide + Water → Acid
- Example reactions leading to acids:
- CO2 + H2O → H2CO3 (carbonic acid)
- SO2 + H2O → H2SO3 (sulphurous acid)
- SO3 + H2O → H2SO4 (sulphuric acid)
- P2O5 + 3H2O → 2H3PO4 (phosphoric acid)
- Neutral oxides like carbon monoxide (CO) and nitric oxide (NO) do not form acids when reacted with water.
From Salts
- Non-volatile acids can displace volatile acids when heated with their salts.
- Reaction involves: Normal salt + Concentrated Sulphuric acid → Acid salt + Displaced volatile acid
- Example reaction:
- KNO3 + H2SO4 (produces an acid salt and a volatile acid)
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Description
This quiz covers the preparation of acids from non-metals and acidic oxides. You'll learn how specific reactions yield common acids such as hydrochloric, carbonic, and sulphuric acid. Test your knowledge with various reaction equations and their products.
