What is the pOH of a 3.0 x10-3 M NaOH solution? pOH =

Question

What is the pOH of a 3.0 x10-3 M NaOH solution?
pOH =

in progress 0
Latifah 1 year 2021-08-15T04:08:40+00:00 1 Answers 46 views 0

Answers ( )

    0
    2021-08-15T04:09:56+00:00

    Answer:

    2.5

    Explanation:

    From the question given above, the following data were obtained:

    Molarity of NaOH = 3.0×10¯³ M

    pOH =?

    Next, we shall determine the concentration of the hydroxide ion in the solution. This can be obtained as follow:

    NaOH (aq) —> Na⁺ (aq) + OH¯ (aq)

    From the balanced equation above,

    1 mole of NaOH produced 1 mole of OH¯.

    Therefore, 3.0×10¯³ M NaOH will also produce 3.0×10¯³ M OH¯.

    Finally, we shall determine the pOH of the solution. This can be obtained as illustrated below:

    Concentration of hydroxide ion [OH¯] = 3.0×10¯³ M

    pOH =?

    pOH = – Log [OH¯]

    pOH = – Log 3.0×10¯³

    pOH = 2.5

    Thus, the pOH of the solution is 2.5

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )