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alexgriva [62]
3 years ago
14

Calculate the equilibrium constant for the decomposition of water 2h2o(l)  2h2(g) + o2(g) at 25°c, given that g°f (h2o(l)) = –

237.2 kj/mol.
Chemistry
1 answer:
kow [346]3 years ago
3 0

Answer:

2.6 ×10^-42

Explanation:

From

∆G= -RTlnK

∆G= -237.2 KJmol-1 or -237.2×10^3 Jmol-1

R= 8.314 Jmol-1K-1

T= 25°C + 273= 298K

-237.2×10^3= 8.314 × 298 × ln K

ln K= -237.2×10^3/2477.572

K = 2.6 ×10^-42

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Explanation:

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What is the volume of 0.5 M solution of NaOH that contains 3.6 mol of solute?
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The volume of NaOH solution is 0.532 L.  

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Which grouping of circles, when considered in order from the top to the bottom, best represents the relative size of the atoms o
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How many neutrons and protons are there in the nuclei of the following atoms. a. Li-7 b. O-16 c. Th-232 d. Pu-239
ANEK [815]

Answer:

a.

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b.

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d.

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Mass number  = Number of protons + Number of neutrons

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Atomic number = Number of protons

<u>Li - 7</u>

Given, Mass number of Lithium = 7

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Given, Mass number of oxygen = 16

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3 0
3 years ago
Why is Potassium not used in school laboratory
densk [106]
<h3>Because it is harmful for school environment.</h3>

Potassium Metal Is Explosive— Do Not Use It! The reaction of sodium with water is a spectacular and essential classroom demonstration. Many teachers want to show also the more violent reaction of potassium. We propose not to do so because explosions can happen even before the metal is in contact with water.

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6 0
3 years ago
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