Which Equation Correctly Represents the Reaction Between Silica and Hydrofluoric

question 60

Multiple Choice

Which equation correctly represents the reaction between silica and hydrofluoric acid?

• A)SiCl₄ + 4HF → SiF₄ + 4HCl
• B)SiO₂ + 6HF → H₂SiF₆ + 2H₂O
• C)SiCl₂ + 2HF → SiF₂ + 2HCl
• D)SiH₄ + 4HF → SiF₄ + 4H₂
• E)none of the above

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Definitions:

R

Commonly used to symbolize resistance in electrical equations and diagrams, measured in ohms (Ω).

RC Parallel Circuit

An electrical circuit composed of resistors and capacitors arranged in parallel, affecting current flow and charge distribution differently from series configurations.

Capacitive Reactance

Capacitive reactance is the measure of opposition that a capacitor offers to AC (alternating current), and it decreases with an increase in the frequency of the electric signal.

Resistive Current

The current that flows through a circuit with only resistive elements, directly proportional to the voltage across and inversely proportional to the resistance.