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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?

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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An interpenetrating primitive cubic structure like that of CsCl with anions in the corners has an edge length of 664 pm. If the

san4es73 [151]

Answer:

the ionic radius of the anion $r^- = 312.52 \ pm$

Explanation:

From the diagram shown below :

The anion $Cl^-$ is located at the corners

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∴ $2 \ r^+ \ + 2r^- \ = \sqrt{3 \ a} \\ \\ r^+ +r^- = \frac{\sqrt{3}}{2} a$

Given that :

$\frac{r^+}{r^-} =0.84$ (i.e the ratio of the ionic radius of the cation to the ionic radius of

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$0.84r^- \ + r^- \ = \frac{\sqrt{3}}{2}a \\ \\ 1.84 r^- = \frac{3}{2}a \\ \\ r^- = \frac{\sqrt{3}}{2*1.84}a$

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