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expeople1 [14]
3 years ago
6

Acid-dissociation constants of two acids are listed in the table above. A 20. mL sample of a 0.10 M solution of each acid is tit

rated to the equivalence point with 20. mL of 0.10 M NaOH. Which of the following is a true statement about the pH of the solutions at the equivalence point?
Chemistry
2 answers:
Len [333]3 years ago
5 0

Answer:

Solution 1 has a higher pH at the equivalence point because CH3CO2H has the stronger conjugate base.

Explanation:

Since according to the chemical reaction shown below, if the conjugated base is stroboscopic, the product of the reaction would be an OH- so that its pH is higher:

CH3COO- + H2O  = CH3COOH+ OH-

Fofino [41]3 years ago
3 0

Answer:

Refer below for the explanation.

Explanation:

CH₃CO₂H has a higher conjugate base because Solution 1 has a bigger pH at the similar point.

Solution

1 CH₃CO₂H 1.75 x 10⁻⁵

2 CF₃CO₂H 1.0 x 10⁰

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What is the balanced equation for the complete combustion of pentane (C5H12)?
LekaFEV [45]
2C5H12 + 16O2 —> 10CO2 + 12H2O

2•5=10 C 10=1•10
2•12=24 H 24=2•12
16•2=32 O 32=(10•2)+(1•12)
=20+12
6 0
4 years ago
Why are Li Na and k Placed in the same group of the periodic table?<br><br>​
Rudiy27

Answer:

Their valence electrons/properties

Explanation:

Elements in the same group of the periodic table have the same amount of valence electrons, which determines how they bond with other elements in other groups. This also determines their properties such as their reactivity. Since Li, Na, and K are in the same group, they must have similar properties and the same amount of electrons in their outermost shell.

5 0
4 years ago
How do anion formation and valence electrons relate?
sveta [45]

Answer 1: Atoms gain valence electrons to form anions.

Explanation:

Anions are negatively charged species of an ions. Anions are formed when atoms with nearly complete octet gains electrons.

Answer 2: Emission spectrum

Explanation:

When ever electron jumps from higher energy to lower energy level energy is emitted out in the form of light.The wavelength of the light is given as \lambda:

\lambda=\frac{hc}{E} , E = energy, c= speed the light, h= planck constant

Answer 3: Two atoms of silicons could combine by fusion in order to create nickel.

Explanation:

Silicon has atomic number of 14 with atomic mass of 28 u.

nickel has atomic number of 28 with atomic mass of 59 u.

Two different isotopes of silicon atom will fuse together to give nickel.

^{29}Si_{14}+^{30}Si_{14}\rightarrow^{59}Ni_{28}



5 0
3 years ago
If I give my teacher chocolate, then she will give me less homework because she will be happier
Softa [21]
Good idea!maybe I should try that
6 0
4 years ago
Please explain the relationship between the terms: <br> Element, atom, molecule, and compound.
umka2103 [35]
An element is made up of an atom, a molecule is a bunch of elements, and a comping is a bunch of molecules
4 0
3 years ago
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