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2 years ago

What do oxidation reactions produce during the electrolysis of water?

Chemistry

2 answers:

jok3333 [9.3K]2 years ago

8 0

Hydrogen gas, oxygen gas and water

4H2O (l) ---> 2H2O (l) + O2 (g) + 2H2 (g)

klemol [59]2 years ago

3 0

Answer : Oxidation reaction produces oxygen and water molecule during electrolysis of water.

Explanation:

Electrolysis : It is a type of process in which the chemical decomposition produced by passing an electric current through the solution that containing the ions.

Electrolysis of water : It is basically the decomposition of water into oxygen and hydrogen gas through a process of electric current.

Oxidation reaction is defined as the reaction in which a substance looses its electron to attain stability.

The chemical reactions during electrolysis of water are:

At cathode: $2H_2O+2e^-\rightarrow H_2+2OH^-$

At anode: $2OH^-\rightarrow \frac{1}{2}O_2+H_2O+2e^-$

Overall reaction: $H_2O\rightarrow H_2+\frac{1}{2}O_2$

Oxidation reaction occurs at anode.

Hence, oxidation reaction produces oxygen and water molecule during electrolysis of water.

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When 1 mol of sodium nitrate, is dissolved in 1 cubic decimeter of water, 40 kJ of heat energy is absorbed. What is the drop in

vesna_86 [32]

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1.0 ° C

Explanation:

The molar mass for Sodium Nitrate NaNO₃ = (23+14+(16×3)) = 85

Number of moles of NaNO₃ = mass of NaNO₃ /molar mass of NaNO₃

⇒ 17/85 = 1.38 moles

Since 1 mole of NaNO₃ dissolved in 1 cubic decimeter of water, 40 kJ of heat energy is absorbed.

when 1.38 mole of NaNO₃ dissolved in 1 cubic decimeter of water, x kJ of heat energy is absorbed..

Then; x kJ of 1.38 mole of NaNo₃ = 1.38 × 40 kJ =55.2 kJ of heat absorbed.

Using the relation : Q = mcΔT to determine the temperature drop ; we get:

55.2 = 17 × 4 (ΔT)

55.2 = 68 ΔT

ΔT= 0.8 ° C

ΔT ≅ 1.0 ° C

Therefore, the drop in temperature when 17.0g of sodium nitrate is dissolved in 1 cubic decimeter of water is 1.0 ° C

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2 years ago

Why does distillation produce pure water but filtration does not?

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Filtration is used to separate large particles but this process does not provide pure solutions as some impurities still remain in the solution. On the other hand, distillation helps in the formation of pure water as it removes the impurities from the water or solution.

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Complete the balanced dissociation equation for the compound below. If the compound does not dissociate, write NR after the reac

nikdorinn [45]

Answer:

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K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)

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