All categories

3 years ago

In the following equation, which element has been oxidized?

Chemistry

1 answer:

Bumek [7]3 years ago

6 0

The element that has been oxidized is Al ( Answer A)

Explanation

if the oxidation number of an element is greater in the product side than the reactant side then the element has lost the electrons . This mean that the element has been oxidized.

Al is oxidized because it move from oxidation state Zero(0) in reactant side to oxidation state 3⁺ in product side.

This implies that Al loses 3 electrons.

You might be interested in

How many electrons will metals generally have in their outer shell

Goshia [24]

Answer:

1 - 3

Explanation:

- Look to see where metals are on the periodic table then look at what group they are in. The group tells you the number of valence electrons. Ex. 1A has one valence electron.

- Hope this helped! If you need a further explanation please let me know.

3 0

2 years ago

What do calcium chloride, sodium carbonate, calcium carbonate, and potassium carbonate all have in common? (other than they reac

VARVARA [1.3K]

Answer:

the all dissolve in water

Explanation:

7 0

2 years ago

Read 2 more answers

It takes to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond

Zolol [24]

The given question is incomplete. The complete question is :

It takes 151 kJ/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon. Be sure your answer has the correct number of significant digits.

Answer: 793 nm

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = 151 kJ= 151000 J (1kJ=1000J)

N= moles = 1 = $6.023\times 10^{23}$

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of light = ?

Putting in the values:

$151000J=\frac{6.023\times 10^{23}\times 6.626\times 10^{-34}Js\times 3\times 10^8m/s}{\lambda}$

${\lambda}=7.93\times 10^{-7}m=793nm$ $1m=10^{-9}nm$

Thus the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon is 793 nm

3 0

2 years ago

What substance do you place in the burette during a titration

strojnjashka [21]

Answer:

Acid solution

Explanation:

In acid-base titrations carried out in school and college labs, many of the older generation, well-informed teachers told their students that the acid solution should be taken in the burette.

5 0

2 years ago

Which process is responsible for changing the composition of rock?

andrezito [222]

Answer:

Chemical Weathering

Explanation:

Took test

3 0

2 years ago

Read 2 more answers