To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1600 M sodium hydroxide (NaOH) solution to a 21.0 g sample ofthe fluid and collects the solid nickel(II) hydroxide (Ni(OH),) product. When no more Ni(OH), is produced, he filters, washes and weighs it, and finds that290has been produced.mgThe balanced chemical equation for the reaction is::2+Ni(OH)2(s) + 2 Na (ag)Ni (aq) + 2NaOH(aq) -precipitationWhat kind of reaction is this?acid-baseredoxIf you said this was a precipitation reaction, enter the chemical formula of theprecipitate.Ifsaid this was an acid-base reaction, enter the chemical formula of theyoureactant that is acting as the base.If you said this was a redox reaction, enter the chemical symbol of the elementthat is oxidized.Calculate the mass percent of Ni in the sample. Be sure your answer has 3significant digits.%ExplanationCheck2019 McGraw-Hill Education. All Rights Reserved. Terms of UsePriy

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Asked Nov 22, 2019
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What kind of reaction is this if you said this was a precipitation write down the chemical formula if you said it was an acid-base write down the formula he said it was a redox right down the formula finally calculate the mass percent of MIWhat kind of reaction is this if you said this was a precipitation right down the chemical formula if you said it was an acid base right down the formula he said he was a wee dogs right down the formula finally calculate the mass percent of Ni in the sample be sure your answer has three significant digits

To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1600 M sodium hydroxide (NaOH) solution to a 21.0 g sample of
the fluid and collects the solid nickel(II) hydroxide (Ni(OH),) product. When no more Ni(OH), is produced, he filters, washes and weighs it, and finds that
290
has been produced.
mg
The balanced chemical equation for the reaction is:
:2+
Ni(OH)2(s) + 2 Na (ag)
Ni (aq) + 2NaOH(aq) -
precipitation
What kind of reaction is this?
acid-base
redox
If you said this was a precipitation reaction, enter the chemical formula of the
precipitate.
If
said this was an acid-base reaction, enter the chemical formula of the
you
reactant that is acting as the base.
If you said this was a redox reaction, enter the chemical symbol of the element
that is oxidized.
Calculate the mass percent of Ni in the sample. Be sure your answer has 3
significant digits.
%
Explanation
Check
2019 McGraw-Hill Education. All Rights Reserved. Terms of Use
Priy
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To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1600 M sodium hydroxide (NaOH) solution to a 21.0 g sample of the fluid and collects the solid nickel(II) hydroxide (Ni(OH),) product. When no more Ni(OH), is produced, he filters, washes and weighs it, and finds that 290 has been produced. mg The balanced chemical equation for the reaction is: :2+ Ni(OH)2(s) + 2 Na (ag) Ni (aq) + 2NaOH(aq) - precipitation What kind of reaction is this? acid-base redox If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If said this was an acid-base reaction, enter the chemical formula of the you reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. Calculate the mass percent of Ni in the sample. Be sure your answer has 3 significant digits. % Explanation Check 2019 McGraw-Hill Education. All Rights Reserved. Terms of Use Priy

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Expert Answer

Step 1

The given reaction

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Ni2+ 2NaOH Ni(OH)2 2Na

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Step 2

The above reaction is a precipitation reaction. The chemical formula for the precipitate is 

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Ni(OH)2

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Step 3

Mass of Ni(OH)2 obtained = 209mg

Mass of sample fluid = ...

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moles=given massi molar mass 209 x 10 92.708 - 2.254x 103 moles

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