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What is the molecular formula for 2-butyne?

Practice Questions

Q1
What is the molecular formula for 2-butyne?
  1. C4H8
  2. C4H6
  3. C4H10
  4. C4H12

Questions & Step-by-Step Solutions

What is the molecular formula for 2-butyne?
  • Step 1: Understand that 2-butyne is a type of hydrocarbon called an alkyne.
  • Step 2: Know that alkynes have at least one triple bond between carbon atoms.
  • Step 3: Identify that 2-butyne has 4 carbon atoms (C4).
  • Step 4: Count the number of hydrogen atoms. For alkynes, the formula is CnH(2n-2).
  • Step 5: Plug in the number of carbon atoms (n = 4) into the formula: H(2*4-2) = H(8-2) = H6.
  • Step 6: Combine the number of carbon and hydrogen atoms to get the molecular formula: C4H6.
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