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san4es73 [151]
3 years ago
6

Which of these choices is the correct net ionic equation for the reaction that occurs when solutions of pb(no3)2 and nh4cl are m

ixed?
Chemistry
1 answer:
goldfiish [28.3K]3 years ago
4 0
Pb(NO₃)₂ + 2NH₄Cl = PbCl₂(s) + 2NH₄NO₃
Pb²⁺ + 2NO₃⁻ + 2NH₄⁺ + 2Cl⁻ = PbCl₂ + 2NH₄⁺ + 2NO₃⁻
Pb²⁺ + 2Cl⁻ = PbCl₂
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Answer: The empirical formula for the given compound is NO_2

Explanation : Given,

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To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{0.370g}{16g/mole}=0.0231moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{0.130g}{14g/mole}=0.00928moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00928 moles.

For Oxygen  = \frac{0.0231}{0.00928}=2.4\approx 2

For Nitrogen = \frac{0.00928}{0.00928}=1

Step 3: Taking the mole ratio as their subscripts.

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