Definitions needed:
pH = -log[H^+]
pOH = -log[OH^-]
pH + pOH = 14
[H^+]*[OH^-] = 10^-14
(a) [H+] = 3.0 10-13 M
[OH ‾ ] = _____ M
Acidic, Basic, or Neutral?
[H^+]*[OH^-] = 10^-14
[OH^-] = (10^-14)/[H^+]
[OH^-] = (10^-14)/(3.0 10-13 M) = 0.033 M
That's a high concentration of [OH^-], so the solution is basic
(b) [OH ‾ ] = 3.0 10-7 M
[H+] = ______M
Acidic, Basic, or Neutral?
[H^+]*[OH^-] = 10^-14
[H^+]* = (10^-14)/[OH^-]
[H^+]* = (10^-14)/(3.0 10-7 M) = 3.33 x 10^-8
That would be a slightly basic solution (pH just higher than 7).
Answer:
ELEMENTS
Explanation:
CUZ AN A
ELEMENT IS A GROUP OF ATOMS THAT CANNOT BE BROKEN DOWN BY ANY CHEMICAL OR PHYSICAL MEAN
Answer:
The most stable conformer would be the anti-conformer when the substituent methyl groups are farthest away from each other.
Explanation:
Isomers are chemical compounds with the same molecular formula but with different molecular structures.
Conformers are a special type of isomers that produce different structures when the substituents of a Carbon-Carbon single bond (C-C) are rotated.
In 2,3 dimethyl butane, the substituent methyl groups are located around the second and third Carbon to Carbon single bond.
To achieve a stable configuration, the methyl group substituents need to be as far apart as possible (that is, in an anti-position) to minimise repulsion.
The closer the methyl groups are to each other, the more they repel each other and the more unstable the conformer becomes.
Answer:
5331.2 L of Volume
Explanation:
At standard temperature and pressure (STP) one mole of ideal gas occupies 22.4 L of volume.
Hence we can write following relation,
1 mole of Gas occupies = 22.4 L of Volume
So,
238 moles of gas will occupy = X L of Volume
Solving for X,
X = 22.4 L × 238 mole / 1 mole
X = 5331.2 L of Volume
Answer:
Explanation:
Hello,
In this case, for the given reaction, the concentration of dinitrogen oxide is quantified as:
Considering that in molar units (M), the initial and final concentration of dinitrogen oxide are:
Now, since the rate is zeroth order in dinitrogen oxide, it depends on the rate constant only:
Thus, by integrating from the initial concentration to the final concentration:
The time finally results:
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