Q11P To find the Ce4+ content of a so... [FREE SOLUTION]

Chapter 27: Q11P (page 767)

To find the Ce⁴⁺ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO₃)_4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO₂ (FM 172.114). What was the weight percent of Ce in the original solid?

Short Answer

Expert verified

The weight percent of Ce in the original solid is 1.94%.

Step by step solution

Calculate the moles of CeO2:

In this task we have 4.37 g of Ce⁴⁺dissolved and treated with the excess iodate to precipitate Ce(IO₃)_4.When the precipitate was ignited, it produced 0.104vg of CeO₂ (FM 172.114). we will calculate the weight percent of Ce in the original solid.

Calculate the moles of CeO₂:

$n ({CeO}_{2}) = \frac{m ({CeO}_{2})}{M ({CeO}_{2})} n ({CeO}_{2}) = \frac{0.104 g}{172.114 g / mol} n ({CeO}_{2}) = 6.043 脳 10^{- 4} mol$

Consider that $n ({CeO}_{2}) = n (Ce)$ so the previous value is also the number of moles of Ce.

Calculate the mass and the weight of Ce:

Mass of Ce:

$m (Ce) = n 脳 M m (Ce) = (6.043 脳 10^{- 4} mol) 脳 (140.116 g / mol) m (Ce) = 0.08467 g$

weight percent of Ce in the original solid:

$wt % = \frac{0.08567 g}{4.37 g} wt % = 0.0194 = 1.94 %$

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91影视

To find the Ce⁴⁺ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO₃)_4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO₂ (FM 172.114). What was the weight percent of Ce in the original solid?

Short Answer

Step by step solution

Calculate the moles of CeO2:

Calculate the mass and the weight of Ce:

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91影视

To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO3)4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO2 (FM 172.114). What was the weight percent of Ce in the original solid?

Short Answer

Step by step solution

Calculate the moles of CeO2:

Calculate the mass and the weight of Ce:

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Chemical Analysis

Chemistry Branches

Inorganic Chemistry

The Earths Atmosphere

Physical Chemistry

Study anywhere. Anytime. Across all devices.

To find the Ce⁴⁺ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO₃)_4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO₂ (FM 172.114). What was the weight percent of Ce in the original solid?