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solong [7]
3 years ago
11

How many moles of sodium hydroxide are there in 1.0mL of 2.0M NaOH

Chemistry
1 answer:
kvasek [131]3 years ago
4 0
To find the moles, you can use the following formula

moles= Molarity x Liters

Molarity= 2.0 M
Liters= 0.0010 Liters  ---------------->>>>>>>>>> 1.0 mL= 0.0010 Liters

moles= 2.0 M x 0.0010 Liters= 0.0020 moles
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Answer:

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The compound with 2 ionizable groups has the following equilibriums:

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The moles of M²⁻ are:

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And moles of HCl are:

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That means that moles of M²⁻ will be 0,1-0,06 = 0,04mol and moles of HM⁻ will be the same than HCl, 0,06mol

Using Henderson-Hasselbalch formula:

pH = pka + log₁₀ [M²⁻] / [HM⁻]

Replacing:

pH = 9,5 + log₁₀ [0,04] / [0,06]

<em>pH = 9,32</em>

<em></em>

I hope it helps!

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