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Cerrena [4.2K]
3 years ago
5

Which state of matter would be described as having highly energized, charged particles which move extremely fast?

Chemistry
1 answer:
Naily [24]3 years ago
7 0
Gas

Kinetic energy is the energy an object has due to its motion. The faster particles move, the more kinetic energy they have. Solid objects have the least kinetic energy because their particles vibrate in place. Gases have the most kinetic energy because their particles move very quickly.
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In this reaction, what roll does the lead (II) nitrate play when 50.0 mL of 0.100M iron (III) chloride are mixed with 50.0 mL of
Aloiza [94]

Answer: The roll of lead (II) nitrate is that it is a limiting reactant of the reaction.

Solution : Given,

Molarity of FeCl_3 = 0.1 M

Volume of FeCl_3 = 50.0 ml = 0.05 L     (1 L = 1000 ml)

Molarity of Pb(NO_3)_2 = 0.1 M

Volume of Pb(NO_3)_2 = 50.0 ml = 0.05 L

First we have to calculate the moles of FeCl_3 and Pb(NO_3)_2.

\text{ Moles of }FeCl_3=\text{ Molarity}\times \text{ Volume in L}

\text{ Moles of }FeCl_3=(0.100M)\times (0.05L)=0.005moles

\text{ Moles of }Pb(NO_3)_2=\text{ Molarity}\times \text{ Volume in L}

\text{ Moles of }Pb(NO_3)_2=(0.100M)\times (0.05L)=0.005moles

The balanced chemical reaction is,

2FeCl_3+3Pb(NO_3)_2\rightarrow 2Fe(NO_3)_3+3PbCl_2

From the balanced chemical equation, we conclude that

3 moles of lead nitrate react with 2 moles of ferric chloride.

Thus 0.005 moles of lead nitrate react with =\frac{2}{3}\times 0.005=0.0033 moles of ferric chloride.

Moles of ferric chloride will be left unreacted = 0.005 - 0.0033 =0.0017 moles

Limiting reagent is the reagent in the reaction which limits the formation of product.

Excess reagent is the reagent in the reaction which is in excess and thus remains unreacted.

Therefore, in the given reaction, lead nitrate is the limiting reagent and ferric chloride is the excess reagent.

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