Which of the following is always a spectator ion in a chemical ...

[Pea0909berry]

Which of the following is always a spectator ion in a chemical reaction?
 
  A) Na+
  B) Cl-
  C) S2-
  D) Mg2+
  E) All of these ions.

Question 2

Pyruvate is converted to lactate under anaerobic conditions because ________.
 
  A) reduction of pyruvate provides NAD+ which is needed for glycolysis
  B) lactate releases oxygen upon conversion to acetyl-CoA
  C) reduction of pyruvate provides NADH which is needed for gluconeogenesis
  D) lactate is storage for of pyruvate for use later when more ATP is needed
  E) none of the above

Question 3

2 AgNO3 (aq) + K2SO4 (aq)  2 KNO3 (aq) + Ag2SO4 (s) The spectator ions in the reaction shown are
 
  A) silver ion and nitrate ion.
  B) potassium ion and sulfate ion.
  C) potassium ion and nitrate ion.
  D) silver ion and sulfate ion.
  E) hydrogen ion and hydroxide ion.

Question 4

All of the following are common reactions of benzene except
 
  A) bromination.
  B) chlorination.
  C) hydrogenation.
  D) nitration.
  E) sulfonation.

[Heffejeff]

Answer to Question 1

A

Answer to Question 2

A

Answer to Question 3

C

Answer to Question 4

C

[Pea0909berry]

Excellent

[daiying98]

Gracias!