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ZanzabumX [31]
3 years ago
15

What is the reducing agent in the following reaction? 2Na + 2H2O → 2NaOH + H2

Chemistry
2 answers:
Nimfa-mama [501]3 years ago
5 0
Na is the reducing agent since it is being oxidized
Eddi Din [679]3 years ago
5 0

Answer: Na

Explanation:

Oxidation reaction : When there is a loss of electrons and thus an increase in oxidation number.

M\rightarrow M^{n+}+ne^-

Reduction reaction : when there is a gain of electrons and thus a decrease in oxidation number.

M^{n+}+ne^-\rightarrow M

Sodium metal has gone under oxidation, as its oxidation state is changing from 0 in Na to +1 in NaOH

H^+ ion has gone under reduction, as its oxidation state is changing from +1 in H^+ to 0 in H_2

Those chemical agents which get oxidized itself and reduce others is called reducing agents. Thus Na is a reducing agent here.

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Water can be formed in the following reaction:
just olya [345]

Answer

12

Explanation

We have a balanced chemical equation from the question that depicts the formation of water.

                                                  2H2+O2-->2H2O,


We can clearly see from the equation that, the formation of 2 moles of water molecules requires the input of 2 moles of hydrogen and 1 mole of Oxygen.

So indirectly, it tells that the moles of water molecules will be double of the moles of Oxygen molecules used in the reaction.

So if we say that 6 moles of oxygen is used and the reaction is going in such a way that hydrogen is not a limiting reactant, then 12 moles of water will be produced.


Hope it help!

8 0
3 years ago
When a piece of metal is irradiated with UV radiation (λ = 162 nm), electrons are ejected with a kinetic energy of 3.54×10-19 J.
dsp73

We have that the work function of the metal

\phi=1.227*10^{-18}J

From the Question we are told that

UV radiation (λ = 162 nm)

Kinetic energy K.E =3.54*10-19 J.

Generally the equation for Kinetic energy    is mathematically given as

KE =\frac{hc}{\pi-\phi} \\\\\phi =\frac{ 6.626*10^{-34} * 3*10^8}{162*10^{-9} -3.54*10^{-19}}

\phi=1.227*10^{-18}J

For more information on this visit

brainly.com/question/12669551?referrer=searchResults

8 0
3 years ago
Which statements accurately describe soap? Select one or more:
tia_tia [17]

Answer:

A. Soaps react with ions in hard water to create a precipitate.

B. Soaps are both hydrophobic and hydrophilic.

D. Soaps should be weakly alkaline in solution.

Explanation:

A. Hard water contains <u>magnesium and calcium minerals</u> like calcium and magnesium carbonates, sulfates and bicarbonates. As soon as these minerals come in contact with soap their ions like Mg²⁺ & Ca²⁺ form precipitates.

B. Soap are both hydrophilic and hydrophobic. They reason why they exhibit both the properties is really important for their functionality. The hydrophobic part of soap makes interaction with oil/dust particles while the hydrophilic part makes interaction with water. When the cloth is rinsed the dirt/soap particles are removed from the dirty clothes thereby making them clean.

C. Soaps have alkaline pH i.e. more than 7 that is why they have bitter taste.

5 0
3 years ago
When using water displament to find the volume of an irregular shaped object we use the unit...
Gekata [30.6K]
Yeah it would develop fire
5 0
2 years ago
Differentiate between elements and mixtures
Ksenya-84 [330]

Answer:

ELEMENTS MIXTURE

Elements are made up of one kind of atoms. Mixtures are made up of two or more kinds of Compounds .

Elements cannot be broken down into simpler substances by any physical or chemical method. The various constituents are seperated by simple physical means

3 0
2 years ago
Read 2 more answers
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