Hydrofluoric Acid + Silicon Dioxide Reaction Explained

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The reaction between gaseous hydrofluoric acid (HF) and solid silicon dioxide (SiO2) is questioned for accuracy, particularly the proposed products of H2O and SiF. Concerns are raised about the appearance of the reaction and the valence electrons of silicon, with clarification that silicon typically has a +4 oxidation state in this context. The discussion emphasizes the complexity of memorizing chemical rules and the challenges faced in understanding the reaction. Participants express confusion about the reaction's validity and the nature of the compounds involved. Overall, the conversation highlights the difficulty in grasping the chemistry of HF and SiO2 interactions.
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Gaseous hydrofluoric acid reacts with solid silicon dioxide.
My work (did a double replacement):
HF+SiO2------>H2O+SiF

But this doesn't look right. Why?
1. It looks wierd.
2. How much valence electrons is Si supposed to have?
3. We're not dealing with solutions.


Anyone know the answer?
 
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ohhh man i do really bad in these. You pretty much have to memorize lots of rules.
I can answer #2 though, since O = -2 and the substance is a solid, then the compound is not an ion thus Si being 4+ . Or...just count from left to right in periodic table. Noting that Si was the cation.
 

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