Question

multiple - choice question
given the following solutions:
solution a: ph of 10
solution b: ph of 7
solution c: ph of 5
which list has the solutions placed in order of increasing h+ concentration?
c. b. a
a. b. c
b. a. c
c. a. b

Explanation:

Step1: Recall the pH formula

The formula for pH is \(pH = -\log[H^{+}]\), which can be rewritten as \([H^{+}]=10^{-pH}\).

Step2: Calculate \([H^{+}]\) for each solution

• For Solution A (\(pH = 10\)): \([H^{+}]=10^{-10}\)
• For Solution B (\(pH = 7\)): \([H^{+}]=10^{-7}\)
• For Solution C (\(pH = 5\)): \([H^{+}]=10^{-5}\)

Step3: Compare the \([H^{+}]\) values

Since \(10^{-10}<10^{-7}<10^{-5}\), the order of increasing \([H^{+}]\) is Solution A, Solution B, Solution C.

Answer:

A. B. C