124​ ML of 0

question 89

Multiple Choice

12.4​ mL of 0.25 M HCl is added to a 120.0-mL sample of 0.220 M HNO₂ (K_a for HNO₂ = 4.0 × 10^-4) . What is the equilibrium concentration of NO₂- ions?

• A) ​3.4 × 10^-3 M
• B) ​2.3 × 10-2 M
• C) ​3.9 × 10^-3 M
• D) ​4.7 × 10^-4 M
• E) ​9.4 × 10^-3 M

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Definitions:

Nonexcludability

A characteristic of public goods where it is not feasible to exclude individuals from using the good or benefiting from it.

Nonrivalry

A characteristic of certain goods where one person's consumption does not reduce availability to others, often associated with public goods.

Negative Externalities

Costs suffered by a third party as a result of an economic transaction which the parties directly involved in the transaction do not fully account for.

Public Good

A product that one individual can consume without reducing its availability to another individual and from which no one is excluded.