The pH of a solution is 2 point 0 Which statement is correct? Useful formulas include open bracket cap h sub 3 cap o raised to the plus power close bracket is equal to 10 raised to the negative pH power , open bracket OH raised to the negative power close bracket is equal to 10 raised to the negative pOH power , pH plus pOH is equal to 14 and open bracket cap h sub 3 cap o raised to the plus power close bracket times open bracket OH raised to the negative power close bracket is equal to 10 to the negative 14 power
Answer
A
The concentration of cap h sub 3 cap o raised to the plus power ions is 100 point 0 cap m .
B
The pOH of the solution is 12 point 0 .
C
The pOH of the solution is 16 point 0 .
D
The concentration of OH raised to the negative power ions is 1 point 0 times 10 to the negative 2 power cap m
Explanation
Use the relationship pH + pOH = 14. With pH = 2.0, pOH = 14 − 2.0 = 12.0, so the correct statement is that the pOH is 12.0. The hydroxide concentration is 1.0 × 10⁻¹² M, not 1.0 × 10⁻² M; the hydronium concentration is 1.0 × 10⁻² M, not 100.0 M.
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