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BARSIC [14]
3 years ago
7

Under what circumstances might be important to know the activity tendencies of elements?

Chemistry
1 answer:
ad-work [718]3 years ago
3 0

Answer: It is very important to know the activity tendencies of the elements. The activity tendencies tells us about whether the element is reactive or not.

In the redox-reaction where there is a need to know the oxidizing agent and reducing agent, we can know it easily from the activity tendencies. The elements lying above the reactivity series are better reducing agents.

In the substitution reactions, the activity tendencies helps us to know which element will replace the other. The element lying above in the series will replace the element lying below it.

MX+NY \rightarrow MY+NX

where, N is an element that lies above in the reactivity series

M is an element that lies below in the reactivity series

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What is the value of for this aqueous reaction at 298 K? <br><br>A+B↽⇀C+D ΔG°=12.86 kJ/mol<br><br>K=
agasfer [191]

Answer:

The equilbrium constant is 179.6

Explanation:

To solve this question we can use the equation:

ΔG = -RTlnK

<em>Where ΔG is Gibbs free energy = 12.86kJ/mol</em>

<em>R is gas constant = 8.314x10⁻³kJ/molK</em>

<em>T is absolute temperature = 298K</em>

<em>And K is equilibrium constant.</em>

Replacing:

12.86kJ/mol = -8.314x10⁻³kJ/molK*298K lnK

5.19 = lnK

e^5.19 = K

179.6 = K

<h3>The equilbrium constant is 179.6</h3>

8 0
3 years ago
0.47 M KNO3 solution contains .757475 mol of KNO3 what is the volume
vfiekz [6]

Answer:

Volume is the quantity of three-dimensional  

Explanation:

7 0
2 years ago
PLEASE HELP WILL GIVE 20PTS AND WILL MARK BRAINLIEST FOR RIGHT ANSWER!!!
Marysya12 [62]

Answer:

C) 0.457

Explanation:

The ratio between O2 and H2O is 1:2 according to the balanced equation. You can find how many moles is O2 by : 5.12/22.4 = 0.22857 ( 1 mole = 22.4 litters)

Moles of H2O will be 0.22857 * 2 = 0.457142.

Therefore answer C)

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3 years ago
What are Electrons and how do they move?
Leto [7]

Answer:

it is the primary electricity in solid. they also make up an atom.

Explanation:

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8 0
2 years ago
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What happens when you drop iodine on a leaf?
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2 years ago
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