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makkiz [27]
3 years ago
7

Consider the potassium permanganate reaction again. 2kmno4 16hcl → 2kcl 2mncl2 8h2o 5cl2 how many moles of water are produced wh

en 3.45 moles of kmno4 react? give your answer to the nearest 0.1 moles.
Chemistry
2 answers:
olya-2409 [2.1K]3 years ago
8 0
13.8 moles H2O. hope it helps
ICE Princess25 [194]3 years ago
3 0
<h3><u>Answer;</u></h3>

= 13.8 moles

<h3><u>Explanation and solution;</u></h3>
  • The equation for the reaction is;

<em>16HCl + 2KMnO4  ------> 2KCl + 2MnCl2 + 5Cl2 + 8H2O </em>

  • The equation is balanced and gives proper stoichiometry. This is a redox reaction involving HCl and KMnO4.
  • According to stoichiometry of the reaction 2 moles of KMnO4 will produce 8 moles of H2O.
  • That means 1 mol of KMnO4 will produce exactly 4 moles of H2O  (since 8/2 = 4).
  • Therefore, <em>3.45 moles of KMnO4, will produce;</em>

<em>           3.45 moles × 4  = 13.8 moles</em>

<em>Hence, when 3.45 moles of KMnO4 react, 13.8 moles of water will be produced.</em>


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The molar mass of the acid if 28. 5 ml of the koh solution is required to neutralize the sample is 90.23g/mol.

<h3>For the calculation of molarity of solution</h3>

Molarity = (moles of solute/volume of solution) × 1000

Given,

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1 moles of KOH reacts with 1 moles of HA.

So, 0.00513 moles of KOH react with 0.00513 moles of HA.

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Number of moles= given mass/ Molar mass

Given,

Mass of HA = 0.462 g

Moles of HA = 0.00512 mol

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Thus the molar mass of HA required to neutralize the 28.5 mL of KOH is 90.23g/mol.

learn more about molar mass or moles:

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