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Which two substances in the following list make rain water acidic? CO CO₂ O₂ CFC (chlorofluorocarbon) SO₂ or Which two metals in the following list are transition elements? iron magnesium calcium copper potassium - Leaving Cert Chemistry - Question k - 2019
Question k
Which two substances in the following list make rain water acidic? CO CO₂ O₂ CFC (chlorofluorocarbon) SO₂ or Which two metals in the following list a... show full transcript
Worked Solution & Example Answer:Which two substances in the following list make rain water acidic? CO CO₂ O₂ CFC (chlorofluorocarbon) SO₂ or Which two metals in the following list are transition elements? iron magnesium calcium copper potassium - Leaving Cert Chemistry - Question k - 2019
Step 1
Which two substances in the following list make rain water acidic?
Answer
The two substances from the list that contribute to acid rain are carbon dioxide (CO₂) and sulfur dioxide (SO₂).
- CO₂: When dissolved in water, it forms carbonic acid (H₂CO₃), which lowers the pH of the water, making it acidic.
- SO₂: This gas can also dissolve in water to form sulfurous acid (H₂SO₃), further increasing the acidity of rainwater.
Step 2
Which two metals in the following list are transition elements?
Answer
The metals that are considered transition elements from the given list are iron and copper.
- Iron: It is a well-known transition metal, commonly used in construction and manufacturing due to its strength and durability.
- Copper: Another transition metal, copper is used in electrical wiring and plumbing due to its excellent conductivity and malleability.