All categories

3 years ago

Use the following steps to balance the redox reaction below:

Chemistry

1 answer:

wel3 years ago

6 0

Answer:

(a)

Oxidation

Na -> Na+ + e

Reduction

Cu2+ + 2e -> Cu

(b) Just multiply oxidation half-reaction by 2 and reduction half-reaction by 1.

2Na -> 2Na+ + 2e

Cu2+ + 2e -> Cu

Please be reminded, this answer may not be correct.

You might be interested in

Computers can turn electrical energy into light and sound energy. which other type of energy does a computer produce

prisoha [69]

A. thermal energy
like when the computer gets hot after running for so long

5 0

3 years ago

Easy one! giving brainly if correct

Dafna1 [17]

Answer: glass is not considered as solute.

Extra's:

A solute is a substance that gets dissolved in a solvent. ... The solutes in air are oxygen, argon, and carbon dioxide gas, as well as water vapour.

Sugar is a solute in the solvent water. Sugar is one of the most soluble solutes in water.

Also solute is a powder that can be dissolved in solvent like water. here baking soda is a solute.

5 0

3 years ago

What is the necessary voltage to power the electrolysis of molten sodium chloride?

sammy [17]

4V is the necessary voltage to power the electrolysis of molten sodium chloride.

To create sodium metal and chlorine gas, molten (liquid) sodium chloride can be electrolyzed. A Down's cell is the name of the electrolytic cell utilised in the procedure. The liquid sodium ions in a Down's cell are converted to liquid sodium metal at the cathode. Liquid chlorine ions are oxidised to chlorine gas at the anode. Below is an illustration of the reactions and cell potentials:

oxidation: $2Cl^{-} (l)$ → $Cl_{2} (g)$ + $2e^{-}$ E°= -1.36V

reduction: $Na^{+} (l) + e^{-}$ → $Na (l)$ E°= -2.71V

overall : $2Na^{+} (l) + 2Cl^{-} (l)$ → $2Na(l) +Cl_{2} (g)$ E° $_{cell}$ = -4.07V

For this electrolysis to take place, the battery needs to supply more than 4 volts. The only means to obtain pure sodium metal is by this reaction, which also serves as a significant source of chlorine gas generation. Swimming pools and other surfaces are frequently cleaned and disinfected with chlorine gas.

Learn more about sodium chloride here;

brainly.com/question/9811771

#SPJ4

6 0

2 years ago

What is the mass of 3.00 moles of magnesium chloride, MgCl2? Express your answer with the appropriate units.

Tresset [83]

To answer this question you need to know how to calculate the molecular weight of a molecule. The compound is having 1 Mg atom and 2 Cl atom, thus the molecular weight should be:
24.305+ 2*35.453= <span>95.211 gram/mol.

Then, the mass of 3 mol of MgCl would be:
3 mol * 95.211 gram/mol= 285.633 gram</span>

7 0

4 years ago

A sample of liquid has a mass of 24 grams and a volume of 16 mL what is the density

viktelen [127]

Answer:

<h3>The answer is 1.5 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$