Questions: Which of the following is the empirical formula for hexane, C6H14? Select one: A. C0.43H B. C6H14 C. C12H28 D. CH2,3 E. C3H7

Which of the following is the empirical formula for hexane, C6H14? Select one: A. C0.43H B. C6H14 C. C12H28 D. CH2,3 E. C3H7
Transcript text: Which of the following is the empirical formula for hexane, $\mathrm{C}_{6} \mathrm{H}_{14}$ ? Select one: A. $\mathrm{C}_{0.43} \mathrm{H}$ B. $\mathrm{C}_{6} \mathrm{H}_{14}$ C. $\mathrm{C}_{12} \mathrm{H}_{28}$ D. $\mathrm{CH}_{2,3}$ E. $\mathrm{C}_{3} \mathrm{H}_{7}$
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Solution

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Solution Steps

Step 1: Understand the Empirical Formula

The empirical formula represents the simplest whole-number ratio of atoms in a compound. For hexane, \(\mathrm{C}_{6} \mathrm{H}_{14}\), we need to find the simplest ratio of carbon to hydrogen.

Step 2: Determine the Ratio

The molecular formula of hexane is \(\mathrm{C}_{6} \mathrm{H}_{14}\). To find the empirical formula, divide the subscripts by their greatest common divisor. In this case, the greatest common divisor of 6 and 14 is 2.

Step 3: Simplify the Formula

Divide each subscript in \(\mathrm{C}_{6} \mathrm{H}_{14}\) by 2:

  • Carbon: \( \frac{6}{2} = 3 \)
  • Hydrogen: \( \frac{14}{2} = 7 \)

The empirical formula is \(\mathrm{C}_{3} \mathrm{H}_{7}\).

Step 4: Select the Correct Option

Compare the simplified empirical formula \(\mathrm{C}_{3} \mathrm{H}_{7}\) with the given options. The correct choice is option E: \(\mathrm{C}_{3} \mathrm{H}_{7}\).

Final Answer

The correct answer is E. \(\boxed{\mathrm{C}_{3} \mathrm{H}_{7}}\)

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