Calculate the POH of a Solution That Contains 3

question 98

Multiple Choice

Calculate the pOH of a solution that contains 3.9 × 10^-4 mol L^-1 H₃O⁺ at 25 °C.

• A)4.59
• B)3.31
• C)10.59
• D)9.14
• E)0.59

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Definitions:

Auxiliary Winding

A secondary winding in a motor or transformer used to provide additional electrical pathways or support the main winding.

Locked-Rotor Starting

A method of starting electric motors where the rotor is prevented from turning initially, causing high starting torque and current.

Induction Motor

An electric motor that operates by inducing an electromagnetic field in the rotor, rather than through direct electrical connection.

Synchronous Speed

The speed at which the magnetic field in an AC motor rotates, directly related to the frequency of the current supply and the number of poles in the motor.