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ICE Princess25 [194]

3 years ago

15

What is the solution called in the buret during a titration? g?

1 answer:

Paul [167]3 years ago

6 0

The solution inside the buret during a titration is called the titrant. The titrant is the solution of known concentration and is made to react with the analyte or the solution with the unknown concentration. A colored indicator is added to the analyte and when the color changes upon addition of the titrant, it is said that the endpoint has been reached.

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Ammonia is produced from the reaction of nitrogen and hydrogen according to the following balanced equation: N2 1 g 2 1 3H2 1 g

bekas [8.4K]

Answer:

Mass of NH3 produced = 1217 g or 1.217*10^3 g

Explanation:

<u>Given:</u>

Mass of N2 = 1.003*10^3 g

Mass of H2 = 5.003*10^2 g

<u>To determine:</u>

Maximum mass of NH3 that can be produced when the given amounts of N2 and H2 combine

<u>Calculation:</u>

The chemical reaction corresponding to the production of ammonia is:

$N2(g)+3H2(g)\rightarrow 2NH3(g)$

Based on the reaction stoichiometry:

1 mole of N2 combines with 3 moles of H2 to form 2 moles of NH3

$moles\ of\ N2 = \frac{Mass\ N2}{Molar\ mass N2} = \frac{1.003*10^{3}g }{28g/mol} =35.8\ moles$

$moles\ of\ H2 = \frac{Mass\ H2}{Molar\ mass H2} = \frac{5.003*10^{2}g }{2g/mol} =250\ moles$

Since the moles of N2 is less than that of H2, the limiting reagent will be N2 which would in turn determine the amount of NH3 formed.

Based on the reaction stoichiometry the N2 : NH3 ratio = 1:2

Therefore,

$moles\ of\ NH3\ produced = 2*35.8 = 71.6\ moles\\\\Mass\ of\ NH3\ produced = moles*molar mass = 71.6\ moles*17\ g/mol = 1217 g$

8 0

4 years ago

4.0 mol Na2S reacts with 5.0 mol

Bumek [7]

The number of moles of $Na_2SO_4$ form from 5.0 moles $Na_2S$ is 5 moles.

<h3>What is a limiting reactant?</h3>

Limiting reactants are those reactants that are completely used up in a chemical reaction.

4.0 mol $Na_2S$ will be completely used since the combining ratio is 1 : 1 : 1.

$Na_2S + CuSO_4$ -> $Na_2SO_4 + CuS$

From the chemical equation above, 5.0 moles $Na_2S$ will yield 5 moles of $Na_2SO_4$ .

Learn more about limiting reactants here:

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2 years ago

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Sphinxa [80]

Answer:

Condensation and Depositon

Explanation:

Condensation is from gas to liquid

Deposition is from gas to solid

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How does an atom change if all of its electrons are removed?

adelina 88 [10]

Answer:

The atom becomes positively charged.

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How would water be used in a chemical experiment that requires the dilution of hydrochloric acid? How would you test the solubil

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4 years ago