A Certain Reaction, Reaction A $\rarr$ Products, Is First Order with Respect ToA

question 10

Multiple Choice

A certain reaction, reaction A $\rarr$ products, is first order with respect toA. Starting with [A] = 0.250M, it takes 45 min to reduce the concentration of A to 0.110M. What is its rate constant for this reaction

• A) 7.9 x 10^-3 min^-1
• B) 1.1 x 10^-1 min^-1
• C) 3.0 x 10^-4 min^-1
• D) 1.8 x 10^-2 min^-1

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Definitions:

Boric Acid

A weak, water-soluble acid used as an antiseptic, insecticide, and flame retardant, among other applications.

Weak Eyewash

Insufficient or ineffective rationalizations or excuses; colloquially, a weak attempt to explain away a problem.

Acid Base

Related to the concepts of acidity and alkalinity, crucial in chemistry, biology, and medicine for maintaining proper pH balance in substances and living organisms.

Magnesium Hydroxide

An inorganic compound used as an antacid and laxative.