Chapter 18: Q12 P (page 456)

The absorbance of a $2.31 \times 10^{- 5} M$ solution of a compound is 0.822 at a wavelength of 266nm in a 1.00-cm cell. Calculate the molar absorptivity at 266nm.

Short Answer

Expert verified

The Molar absorptivity $ε$ at266nm is $35584 M^{- 1} {cm}^{- 1} .$ .

Step by step solution

Definition of Moral Absorbance.

A spectrophotometric unit indicates the light a substance absorbs with respect to length, usually the centimeter, and concentration, usual moles per liter.

The Molar Absorptivity.

The molar absorbance is given as,

$A = ε \cdot c \cdot b$

Therefore,

$ε = \frac{A}{c \cdot b} ε = \frac{0.822}{2.31 \cdot 10^{- 5} M \cdot 1 cm} ε = 35584 M^{- 1} {cm}^{- 1}$

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The absorbance of a $2.31 \times 10^{- 5} M$ solution of a compound is 0.822 at a wavelength of 266nm in a 1.00-cm cell. Calculate the molar absorptivity at 266nm.

Short Answer

Step by step solution

Definition of Moral Absorbance.

The Molar Absorptivity.

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The absorbance of a 2.31×10-5M solution of a compound is 0.822 at a wavelength of 266nm in a 1.00-cm cell. Calculate the molar absorptivity at 266nm.

Short Answer

Step by step solution

Definition of Moral Absorbance.

The Molar Absorptivity.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

Organic Chemistry

Kinetics

Ionic and Molecular Compounds

The Earths Atmosphere

Chemical Analysis

Study anywhere. Anytime. Across all devices.

The absorbance of a $2.31 \times 10^{- 5} M$ solution of a compound is 0.822 at a wavelength of 266nm in a 1.00-cm cell. Calculate the molar absorptivity at 266nm.