Question

(08.04 MC)

Which of the following statements best predicts the pH value of NH3 and KOH?
Both have a pH less than 7, but NH3 has a higher pH than KOH.
Both have a pH greater than 7, but NH3 has a lower pH than KOH.
O NH3 has a pH less than 7, and KOH has a pH greater than 7.
O NH3 has a pH greater than 7, and KOH has a pH less than 7.
Question 2 Multiple Choice Worth 1 points)​

Answer 1

Answer: B) Both have a pH greater than 7, but NH3 has a lower pH than KOH.

Answer 2

Both have a pH greater than 7, but NH₃ has a lower pH than KOH.

Step-by-step explanation:

• Both of NH₃ and KOH are bases (can produce OH⁻), so both have a pH greater than 7.

• NH₃ is considered as a weak base (not completely ionized), while KOH is a strong base (completely ionized).

• If both NH₃ an KOH has the same concentration, KOH produces OH⁻ higher than that of NH₃.

• So, NH₃ has a lower pH than KOH.

• Thus the right choice is:

Both have a pH greater than 7, but NH₃ has a lower pH than KOH.