The formula for potassium sulfide is ________. Fill in the ...

[Deast7027]

The formula for potassium sulfide is ________.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following is an oxidation-reduction reaction?
 
  A) Cu (s) + 2AgNO3 (aq)  2Ag (s) + Cu(NO3)2 (aq)
  B) HCl (aq) + NaOH (aq)  H2O (l) + NaCl (aq)
  C) AgNO3 (aq) + HCl (aq)  AgCl (s) + HNO3 (aq)
  D) Ba(C2H3O2)2 (aq) + Na2SO4 (aq)  BaSO4 (s) + 2NaC2H3O2(aq)
  E) H2CO3 (aq) + Ca(NO3)2 (aq)  2HNO3 (aq) + CaCO3 (s)

Question 3

Given that O2 is paramagnetic and has a bond order of 2, and its highest occupied molecular orbital is antibonding, what would be the expected bond orders for O22- and O22+?
 
  A) 1 for O22- and 3 for O22+
  B) 3/2 for O22- and 5/2 for O22+
  C) 5/2 for O22- and 3/2 for O22+
  D) 3 for O22- and 1 for O22+

Question 4

The purpose of the salt bridge in an electrochemical cell is to ________.
 
  A) maintain electrical neutrality in the half-cells via migration of ions
  B) provide a source of ions to react at the anode and cathode
  C) provide oxygen to facilitate oxidation at the anode
  D) provide a means for electrons to travel from the anode to the cathode
  E) provide a means for electrons to travel from the cathode to the anode

[nmyers]

Answer to Question 1

K2S

Answer to Question 2

A

Answer to Question 3

A

Answer to Question 4

A