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4 years ago

Which of the following conversions requires an oxidizing agent?

Chemistry

2 answers:

Elis [28]4 years ago

7 0

Zn + H₂SO₄ = ZnSO₄ + H₂

Zn⁰ - 2e⁻ = Zn²⁺ zinc is the reducing agent
2H⁺ + 2e⁻ = H₂ hydrogen ions is oxidizer

maksim [4K]4 years ago

3 0

The answer is d)

Zn has oxidation number 0; Zn(2+) has oxidation number +2. Here 2 electrons were taken away, so the Zn was oxidized. So, the transformation requires an oxidizing agent.

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For the following reactions, write a balanced equation using half-reactions and calculate the voltage to be expected.

Iteru [2.4K]

a) $2Na(s) +2H_2O(I)$ → $2Na^+(aq) + OH^-(aq)+ H_2(g)$

b) $2Ag (s) +2H^(aq)$ → $2 Ag^+ (aq) +H_2(g)$

<h3>What are half-reactions?</h3>

The half-reaction method is a way to balance redox reactions. It involves breaking the overall equation down into an oxidation part and a reduction part.

$2Na(s) +2H_2O(I)$ → $2Na^+(aq) + OH^-(aq)+ H_2(g)$

$E^0 cell = E^0 (reduction) - E^0 (oxidation)$

= $E^0(\frac{H_2O}{H_2}, OH^-) -E^0(Na^+/Na)$

= -0.83 - (-2.71) =1.88V

$2Ag (s) +2H^(aq)$ → $2 Ag^+ (aq) +H_2(g)$

$E^0cell$ = $E^0(H^+/H_2) -E^0(Ag^+/Ag)$

$E^0cell$ =-0. - (0.8) =-0.8V

Learn more about the half-reactions here:

https://brainly.in/question/18053421

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2 years ago

Words that mean the same thing<br> decrease,<br> diminish,<br> dwindle

strojnjashka [21]

Answer:

Subside

Explanation:

7 0

3 years ago

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What quantities are conserved when balancing a chemical reaction?

EleoNora [17]

The mass in a chemical reaction remains (mostly) the same.

(except for radiation/nuclear fission, in which mass gets converted into energy)

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3 years ago

Three light sticks are activated at the same time. One stick is placed in a beaker of hot water, one in a beaker of ice water, a

Nuetrik [128]

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3 years ago

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In which of the three acid-base concepts can water be a product of an acid-base reaction? In which is it the only product?

Archy [21]

Salt and water is formed as product, when Arrhenius acid and Arrhenius base reacts and the reaction is known as neutralization reaction.

<h3>What is Arrhenius acid-base reaction?</h3>

The concept of acid and base based on the theory of ionization which was first proposed in 1884 by Svante Arrhenius
According to Arrhenius, on dissociation in water the hydrogen-containing compounds which give H+ ions or protons are the acids and the hydroxide compounds which give OH− ions on dissociation in water are bases.
This theory is applicable only to compounds which are dissolved in aqueous solution.

To learn more about Arrhenius acid-base reaction: brainly.com/question/15196401

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1 year ago