The PH of a 0

question 120

Multiple Choice

The pH of a 0.100 M solution of an aqueous weak acid (HA) is 3.20. What is K_a for the
Weak acid?

• A) 4.0 × 10^-6
• B) 6.3 × 10^-4
• C) 7.2 × 10^-5
• D) 3.2
• E) none of these

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Definitions:

Permanent Magnet

A material that maintains a constant magnetic field without the need for electrical power.

Resistance Temperature Detector

A sensor used to measure temperature by correlating the resistance of the RTD element with temperature.

PLC Program Rung

A horizontal row in a ladder logic diagram, which represents a logical operation performed in a PLC program.