What Is the Hydronium Ion Concentration in a Solution Prepared

question 127

Multiple Choice

What is the hydronium ion concentration in a solution prepared by mixing 50.00 mL of 0.10 M HCN with 50.00 mL of 0.030 M NaCN? Assume that the volumes of the solutions are additive and that
K_a = 4.9 × 10^-10 for HCN.

• A)1.5 × 10^-10 M
• B)4.9 × 10^-10 M
• C)1.6 × 10^-9 M
• D)7.0 × 10^-6 M

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Definitions:

Camber

The angle of the wheels in relation to the road surface, seen from the front of the vehicle, which can affect tire wear and vehicle handling.

Caster

The angle of the steering axis in a vehicle, which affects stability, steering effort, and cornering behavior.

Zero Toe

A wheel alignment condition where the front of the wheels are parallel to each other, neither pointing towards nor away from the vehicle.

Rear Toe

The angle at which the rear wheels of a vehicle are oriented in relation to its longitudinal axis, affecting stability and cornering.