30. Roshni was performing an experiment in the chemistry lab. She was having a material 'A'
which reacted with oxygen and formed a oxide 'B'. After this 'B' was reacted with water to form
sulphurous acid.
A+ O2 gives B
B + H2O gives H2SO:
Answer the following question based on her experiment. a) Identify A and B.
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Answer:
Sulphuric acid is formed when SO3 reacts with water
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