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vfiekz [6]
3 years ago
9

Analysis definition?

Chemistry
1 answer:
timama [110]3 years ago
7 0
Analysis is a detailed examination of the elements or structure of something.
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When H2SO4 is added to PbI2, a precipitate of PbSO4 forms. The PbSO4 is then filtered from the solution, dried, and weighed. If
Nookie1986 [14]

Answer:

n_{I^-}=3.11x10^{-4}molI^-

Explanation:

Hello,

In this case, the undergoing chemical reaction is shown below:

H_2SO_4(aq)+PbI_2(aq)\rightarrow PbSO_4(s)+2HI(aq)

Thus, we obtain 0.0471 g of lead (II) sulfate, the iodide ions  in the original solution are computed below by stoichiometry, taking into account that into 1 mole of lead (II) iodide there are 2 moles of iodide ions:

n_{I^-}=0.0471gPbSO_4*\frac{1molPbSO_4}{303.26gPbSO_4}*\frac{1molPbI_2}{1molPbSO_4}*\frac{2molI^-}{1molPbI_2} \\n_{I^-}=3.11x10^{-4}molI^-

Best regards.

3 0
3 years ago
How does oxidation differ from reduction
Dima020 [189]

Answer:

See the explanation below, please.

Explanation:

In redox reactions (oxide reduction) the transfer of electrons between compounds occurs.

 In oxidation, electrons are lost (positive charge increases). Example:

Mg ---> Mg2 + + 2 e- (passes from Mg ° to Mg 2+)

On the other hand in the reduction, electrons are gained (negative charge increases or the positive one increases). Example:

Cl2 + 2e- ---> 2 Cl- + 2 e- (passes from Cl ° to Cl-)

6 0
3 years ago
What is the chemical name of the compound represented by the formula Ni2O3? Use the list of polyatomic ions and the periodic tab
bearhunter [10]
The chemical name is nickel (III) oxide .
5 0
3 years ago
Read 2 more answers
A carbohydrate such as glucose has a great deal of ______ energy.
mihalych1998 [28]

Answer:

Chemical energy

Explanation:

Energy in carbohydrates is stored as chemical energy which is released when the carbohydrate is broken down by the body to give glucose and ATP. Animals eat carbohydrates as energy molecules from which they derive energy from the stored chemical energy.

6 0
4 years ago
Why are aldehydes more reactive than ketones?​
Simora [160]

Answer:

Aldehydes are typically more reactive than ketones due to the following factors. ... The carbonyl carbon in aldehydes generally has more partial positive charge than in ketones due to the electron-donating nature of alkyl groups. Aldehydes only have one e- donor group while ketones have two.

Explanation:

5 0
3 years ago
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