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Author Question: Which equation correctly represents the reaction between silica and hydrofluoric acid? A) SiCl4 + ... (Read 95 times)

shofmannx20

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on: Aug 27, 2018
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

Question 2

The formula weight of PbCO3 is ________ amu.
 
  A) 279.2
  B) 112.0
  C) 118.0
  D) 267.2
  E) 235.2


mcni194

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


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