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Fofino [41]
3 years ago
8

What is the pOH of a 0.0072 M solution of sodium hydroxide? pOH=?

Chemistry
2 answers:
Rus_ich [418]3 years ago
8 0
POH of a 0.0072 M=-lg(0.0072) = 2.1426675
saw5 [17]3 years ago
4 0

Answer : 2.14

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

Given : NaOH\rightarrow Na^++OH^-

1 mole of NaOH gives 1 mole of OH^_

Thus 0.0072 moles of  NaOH will give= 0.0072 moles of OH^_

pOH=-\log [OH^]

pOH=-\log (0.0072)

pOH=2.14

Therefore, the pOH of the basic solution is 2.14.

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What is the mass of 7 x 10^28 atoms of Fe?
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6 x 10⁶ g Fe

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Step 1: Set up dimensional analysis

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atoms Fe and atoms Fe cancel out.

mol Fe and mol Fe cancel out.

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