Author Question: What would be the best explanation for the fact that most natural water has a pH of about 5.6? A) ... (Read 70 times)

beccaep · **on:** Jul 29, 2018

What would be the best explanation for the fact that most natural water has a pH of about 5.6?

A) Carbon dioxide reacts with water to form an acid.
B) Air contains acid rain particles.
C) Minerals that are dissolved in water are often acidic.
D) Many salts that dissolve in natural waters make the water basic.
E) none of the above

Question 2

Which of the following statements about oxidation and reduction reactions is true?

A) More than one electron can be transferred in an oxidation and reduction reaction.
B) In a half-reaction, only half of an electron is transferred.
C) Only neutral atoms are formed in oxidation and reduction reactions.
D) A half-reaction is only used for reduction reactions.
E) None of the above are true.