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Author Question: If the following ions Ca2+, NO3-, Na+ and SO42- are placed in a test tube, the precipitate formed is ... (Read 23 times)

ec501234

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on: Aug 27, 2018
If the following ions Ca2+, NO3-, Na+ and SO42- are placed in a test tube, the precipitate formed is ________.
 
  A) NaNO3
  B) CaSO4
  C) Ca(NO3)2
  D) Na2SO4

Question 2

Doubling the concentration of A leads to doubling the rate, while doubling the concentration of B has no effect on the rate. The rate equation is, therefore, ________.
 
  A + B  C
  A) Rate = kAB
  B) Rate = kA
  C) Rate = kA2
  D) Rate = kA2B

Question 3

The VSEPR theory is based on
 
  A) the neutralization of ionic charge in a molecule.
  B) the minimization of repulsion among valence electron pairs.
  C) the arrangement of core electrons in a molecule.
  D) the loss and gain of electrons based on electronegativity.


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Marked as best answer by a Subject Expert

AngeliqueG

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

B

Answer to Question 2

B

Answer to Question 3

B


ec501234

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  • Posts: 573
Reply 2 on: Aug 27, 2018
:D TYSM

marict

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Reply 3 on: Yesterday
Excellent

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