True or False

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[rana88]

Can you please check if Iam right?


E200302 006: The cyanide ion, CN-, has many of the properties of halide ions. On this basis, you would expect it to form a precipitate with the Ag+ cation. 
   True
  False
 

(False)
   
  E200302 005: Indicate which statements which are TRUE and which are FALSE. 
  - A. B.  No reaction can be of more than one type (acid-base, precipitation, etc.   (true)
 - A. B.  Combustion reactions are REDOX reactions.   (false)
 - A. B.  A reaction may be both precipitation and REDOX.  (true)
 - A. B.  Gases can be evolved only in REDOX reactions.   (false)
 - A. B.  It is possible for a precipitate to form in an acid/base neutralization reaction.   (true)
 
 

[mr_cochran]

Well, what do you think, your reasoning.

By the way the first and last statements in E200302 005: contradict each other and you have both as true, so which is it - sorry, but you can't have it both ways.

What is the driving force (simplified) for REDOX reactions? How can you tell if a reaction is REDOX ?

[rana88]

For the first statement Iam pretty sure it's true so Iam guessing the last one is false
correct?

[mr_cochran]

You're going to hate me for this...

Why?

Will any of these help you?

     H₂SO₄(aq) + Ca(OH)₂(aq) --> CaSO₄(s) + H₂O(l)

     CH₄ + 2 O₂ --> CO₂ + 2 H₂O

     HCl(aq) + NaHCO₃(s) --> NaCl(aq) + H₂O(l) + CO₂(g)