A Common Way of Initiating Certain Chemical Reactions with Light $\Delta$

question 56

Multiple Choice

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution. If $\Delta$ H for the reaction Cl₂(g) $\rarr$ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

• A)246.3 nm
• B)465.2 nm
• C)349.3 nm
• D)698.6 nm
• E)492.6 nm

---

Definitions:

Contract Clause

A provision in the U.S. Constitution that prohibits states from passing any law that impairs the obligation of contracts, aiming to protect contractual agreements from state interference.

Minimum Wage Law

Legislation establishing the lowest hourly wage that employers can legally pay their workers.

Unconstitutional

Something that does not conform to the principles or rules set out in a country's constitution, rendering it invalid or unenforceable.

Kelo v. City of New London

A U.S. Supreme Court case deciding on the use of eminent domain to transfer land from one private owner to another to further economic development.