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Fundamental Constants and General Data Quiz

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Questions and Answers

What is the value of the elementary charge?

1.602176 x 10^-19 C

What is the value of the speed of light?

2.99792558 x 10^8 m s^-1

What is the value of Boltzmann's constant?

1.38065 x 10^-23 J K^-1

What is the value of Avogadro's constant?

6.02214 x 10^23 mol^-1 Signup and view all the answers

What is the value of the second radiation constant?

1.43878 x 10^-2 mK Signup and view all the answers

Which statement best describes the focus of chemistry?

The investigation of matter's properties and reactions (B) Signup and view all the answers

What is the main difference between metallic and electrolytic conductors?

Electrolytic conductors conduct electricity without undergoing chemical changes (D) Signup and view all the answers

What is the primary focus of electrochemistry?

Studying electrolyte solutions and phenomena at the atomic level (A) Signup and view all the answers

How are chemists commonly perceived in popular culture?

As white-coated scientists mixing strange liquids in a laboratory (D) Signup and view all the answers

What is a characteristic of semi-conductors like Ge, In, and Tl?

They can exhibit both N-type and P-type behavior (D) Signup and view all the answers

What are the properties of a protic polar solvent?

High dielectric constant, hydrogen bond donor and acceptor, strong solvation of cations and anions. Signup and view all the answers

Give an example of an aprotic nonpolar solvent.

Aliphatic and aromatic hydrocarbons, ethers. Signup and view all the answers

Define dielectric constant and its effect on conductivity.

Dielectric constant is the difference in capacitance with and without an insulator. It affects conductivity of a solvent. Signup and view all the answers

How does the concept of activity differ for ideal and non-ideal processes?

For ideal processes, we use concentration ([conc.]), while for non-ideal processes we use activity (a). Signup and view all the answers

What is the relationship between the activity coefficient (γ) and ions?

The activity coefficient (γ) is specific to ions and is represented by a square bracket ([]) for concentration. Signup and view all the answers

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