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1 year ago

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Which of these solutions is the most basic?

2 answers:

alina1380 [7]1 year ago

6 0

Note the rule

pOH=-log[OH-]

And we can find the answer through logarithm rules basic

loga^b=bloga

So

-log10^-n=n

Higher the n higher the pOH

But

pH=14-pOH
Lesses pOH=Higher pH i.e basic High

As we can see

Option D has least n (5)

Hence D is more basic

dalvyx [7]1 year ago

4 0

<h2>Question↷</h2>

Which of these solutions is the most basic?

[OH-] = 4.3 x 10-9 M

[OH-] = 2.8 x 10-11 M

[OH-] = 6.7 x 10-10 M

[OH-] = 1.0 x 10-5 M

<h2>Answer↷</h2>

<u>[OH-] = 1.0 x 10-5 M</u> ✓

<h2>Solution↷</h2>

[OH-] = 4.3 x 10-9 M

[OH-] = 4.3 x 10^-9 M
pOH = - log [OH^1-]
pOH = - log [4.3 x 10^-9]
pOH = 8.36
pH = 14- 8.36
pH = 5.64

_______________________________________

[OH-] = 2.8 x 10-11 M

[OH-] = 2.8 x 10^-11 M
pOH = - log [OH^1-]
pOH = - log [2.8 x 10^-11 ]
pOH = 10.55
pH = 14-10.55
pH = 3.45

_______________________________________

[OH-] = 6.7 x 10-10 M

[OH-] = 6.7 x 10^-10 M
pOH = - log [OH^1-]
pOH = - log [6.7 x 10^-10]
pOH = 9.17
pH = 14-9.17
pH = 4.83

_______________________________________

[OH-] = 1.0 x 10-5 M

[OH-] = 1.0 x 10-5 M
pOH = - log [OH^1-]
pOH = - log [1.0 x 10^-5 ]
pOH = 5
pH = 14-5
pH = 9

_______________________________________

we know that , the solution with <u>pH > 7</u> is termed as basic and more the pH ,more the basicity, hence ,the solution with the highest pH would be the strongest base out of these all which is

<u>[OH-] = 1.0 x 10-5 M</u> with pH = 9

_______________________________________

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