All categories

3 years ago

Which of the following will reduce copper? zinc mercury fluorine chlorine

Chemistry

2 answers:

garri49 [273]3 years ago

6 0

Answer: The correct answer is Zinc.

Explanation:

Reactivity is defined as the tendency of an element to loose or gain electrons. Metals which loose electrons easily will be considered as more reactive metal.

The reactivity of elements will be judged on the basis of reactivity series. The elements which lie above in the series are more reactive than the elements which lie below in the series. The metals which lie above in the series will easily reduce the metals which lie below in the series.

Copper is the metal which lie above mercury and below zinc.

Thus, zinc is more reactive metal than copper and hence will easily reduce copper from its reaction.

Hence, the correct answer is Zinc.

laiz [17]3 years ago

4 0

Zinc because the only metals that would be able to reduce copper ions in solution would be hydrogen, lead, tin, nickel, iron, zinc, aluminum, Magnesium, sodium, calcium, potassium, and lithium. and according to your answer choices Zinc is the answer.

You might be interested in

Balance the following redox equation, identifying the element oxidized and the element reduced. Show all of the work used to sol

kumpel [21]

Answer:

N is reduced; P is oxidized;

5HNO₃ + 2H₂O + 3P ⟶ 5NO + 3H₃PO₄

Explanation:

Probably the easiest way to balance the equation is to use the ion-electron method.

Step 1. Write the skeleton equation

HNO₃ + P ⟶ H₃PO₄ + NO

Step 2. Separate into two half-reactions.

HNO₃ ⟶ NO

P ⟶ H₃PO₄

Step 3. Balance all atoms other than H and O

Done

Step 4. Balance O by adding H₂O molecules to the deficient side.

HNO₃ ⟶ NO + 2H₂O

4H₂O + P ⟶ H₃PO₄

Step 5. Balance H by adding H⁺ ions to the deficient side.

3H⁺ + HNO₃ ⟶ NO + 2H₂O

4H₂O + P ⟶ H₃PO₄ + 5H⁺

Step 6. Balance charge by adding electrons to the deficient side.

3H⁺ + HNO₃ + 3e⁻ ⟶ NO + 2H₂O

4H₂O + P ⟶ H₃PO₄ + 5H⁺ + 5e⁻

The N atom is reduced because it gains electrons. The P atom is oxidized because it loses electrons.

Step 7. Multiply each half-reaction by a number to equalize the electrons transferred.

5 × [3H⁺ + HNO₃ + 3e⁻ ⟶ NO + 2H₂O]

3 × [4H₂O + P ⟶ H₃PO₄ + 5H⁺ + 5e⁻]

Step 8. Add the two half-reactions.

15H⁺ + 5HNO₃ + 15e⁻ ⟶ 5NO + 10H₂O

12H₂O + 3P ⟶ 3H₃PO₄ +15H⁺ + 15e⁻

15H⁺ + 5HNO₃ + 15e⁻ + 12H₂O + 3P ⟶ 5NO + 10H₂O + 3H₃PO₄ + 15H⁺ + 15e⁻

Step 9. Cancel species that occur on each side of the equation

15H⁺ + 5HNO₃ + 15e⁻ + 2(12)H₂O + 3P ⟶ 5NO + 10H₂O + 3H₃PO₄ + 15H⁺ + 15e⁻

becomes

5HNO₃ + 2H₂O + 3P ⟶ 5NO + 3H₃PO₄

Step 10. Check that all atoms are balanced.

$\begin{array}{ccc}\textbf{Atom} & \textbf{On the left} & \textbf{On the right}\\\text{H} & 9 & 9\\\text{N} & 5 & 5\\\text{O} & 17 & 17\\\text{P} & 3 & 3\\\end{array}$

Step 11. Check that charge is balanced

$\begin{array}{cc}\textbf{On the left} & \textbf{On the right}\\0 & 0\\\end{array}$

Everything checks. The balanced equation is

5HNO₃ + 2H₂O + 3P ⟶ 5NO + 3H₃PO₄

6 0

3 years ago

The oxidation number of what atom or ion decreases in the following reaction?

Flauer [41]

The oxidation number of I (iodine) decreases the in the described chemical reaction from 0 to -1.

Explanation:

We have the following chemical reaction:

I₂ + 2 KCl → KI + Cl₂

The following atoms have a change in the oxidation number:

I with a 0 oxidation number (in I₂) goes to I with -1 oxidation number (in KI) by receiving 1 electron.

Cl with a -1 oxidation number (in KCl) goes to I with 0 oxidation number (in Cl₂) by losing 1 electron.

Learn more about:

oxidation number

brainly.com/question/6710925

#learnwithBrainly

7 0

2 years ago

A molecule has a carbon atom that is best described by sp2 hybridization. how many other atoms are connected to this carbon? thr

Aleksandr-060686 [28]

Three atoms can be connected to the carbon atom with sp2 hybridization of a molecule.As sp2 hybridization for three sp2 hybrid orbitals which can only be connected to three other atoms.As an example is the ethene molecule(C2H4) which have 2 Carbon atoms with sp2 hybridization and one Carbon atom is connected with two hydrogen atoms and one carbon atom.

5 0

3 years ago

Practice question 1 How many moles are in 5.64e25 atoms of iron (Fe)?

liberstina [14]

1 mole is equal to 6.0220 x 1023 atoms of any element.

6 0

2 years ago

If 150 G of wood started Burning, and 30 G of wood ash was left behind, how many grams of CO2 to gas was released

Svetach [21]

Answer:

120G

Explanation:

From the combustion process, about 120G of carbon dioxide would be released into the atmosphere.

For the chemical reaction to obey the law of conservation of matter, if only ash and carbon dioxide are the product, then the sum of the mass of the product and that of the reactants must be the same.

In a chemical reaction, matter is not created nor destroyed, but they are simply changed from one form to another.

Mass of wood burning = mass of ash + mass of CO₂

150G = 30G + mass of CO₂

mass of CO₂ = 150G - 30G = 120G

3 0

3 years ago