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Results tagged with oxides
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user 72585
2
votes
1
answer
2k
views
Why is phosphorous pentoxide a dehydrating agent?
$$\ce{HNO3 + P2O5 -> 2HPO3 + N2O5}$$
In this reaction, both nitrogen and phosphorus have the same oxidation number before and after the product is formed. Since the $+5$ oxidation of nitrogen is unsta …
- 181
0
votes
1
answer
512
views
Is the lattice point in ZnO crystal structure occupied by the molecule ZnO or the ion O^2-/Z...
I learnt that ZnO has a hexagonal crystal system. I was expecting that cations or anions would occupy the lattice points in hcp while voids would be occupied by anions or cations respectively. But whi …
- 181
1
vote
1
answer
2k
views
Reaction of Silicon Dioxide with Hydrofluoric Acid [duplicate]
I learnt that $\ce{SiO2}$(Silicon dioxide) doesn't react with any acid except $\ce{HF}$. So what is special about $\ce{HF}$?
Why does only $\ce{HF}$ reacts with $\ce{SiO2}$ even though $\ce{HF}$ has a …
- 181