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lesya [120]
3 years ago
13

Predict whether aqueous solutions of the following substances are acidic, basic, or neutral:

Chemistry
1 answer:
AlladinOne [14]3 years ago
5 0

Answer:

A. Acidic

B. Neutral

C. Basic

D. Acidic

E. Basic

Explanation:

The reaction of salts with water to give aqueous solutions which are either acidic, basic or neutral is known as salt hydrolysis. Salts that are produced from the reaction of strong acids and weak bases give acidic solutions. Salts that are produced the reaction between weak acids and strong bases give basic solutions. Neutral solutions are obtained from salts produced bynthe reaction of strong acids and strong bases.

The hydrolysis of the given salts are shown below:

A. AlCl₃ + 3 H₂O ---> 3 HCl + Al(OH)₃

The aqueous solution produced will be acidic since HCl is a strong acid while Al(OH)₃ is a weak base.

B. NaBr + H₂O ----> HBr + NaOH

The aqueous solution produced will be neutral since HBr is a strong acid and NaOH is strong base as well.

C. NaClO + H₂O ----> HClO + NaOH

The aqueous solution produced will be basic since HClO is a weak acid while NaOH is a strong base.

D. CH₃NH₃NO₃ + H₂O ----> HNO₃ + CH₃NH₂ + H₂O

The aqueous solution produced will be acidic since HNO₃ is a strong acid while CH₃NH₂ is a weak base.

E. Na₂SO₃ + 2 H₂O ----> H₂SO₃ + 2 NaOH

The aqueous solution produced will be basic since H₂SO₃ is a weak acid while NaOH is a strong base.

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The equilibrium constant, Kp, for the following reaction is 0.497 at 500K.PCl5(g) PCl3(g) + Cl2(g)If an equilibrium mixture of t
Anestetic [448]

<u>Answer:</u> The equilibrium partial pressure of chlorine gas is 0.360 atm

<u>Explanation:</u>

For the given chemical equation:

PCl_5(g)\rightleftharpoons PCl_3(g)+Cl2(g)

The expression of K_p for above reaction follows:

K_p=\frac{p_{Cl_2}\times p_{PCl_3}}{p_{PCl_5}}

We are given:

K_p=0.497\\p_{PCl_3}=0.651atm\\p_{PCl_5}=0.471atm

Putting values in above equation, we get:

0.497=\frac{p_{Cl_2}\times 0.651}{0.471}\\\\p_{Cl_2}=0.360atm

Hence, the equilibrium partial pressure of chlorine gas is 0.360 atm

5 0
2 years ago
How many grams does 1.0 liter of motor the density of motor oil is 0.80g / mL
balandron [24]
I think the answer is 1.25 grams actually i think i’m wrong
5 0
2 years ago
What does it mean when the electrons are excited??
SOVA2 [1]
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7 0
3 years ago
A neutral atom with the electron configuration 2-8-6 would most likely form a bond with an atom having the configuration
Fittoniya [83]

Answer:

The configuration of the atom would be 2-8-2.

Explanation:

Any atom of an element combines with other element to complete its octet and become stable.

The electron configuration of the given atom is 2-8-6. That means the atom has 6 electrons in its outermost shell. To become stable the atom should have 8 electrons in its outermost shell. The given atom has 6 electrons so it either lose 6 electrons or gain 2 electrons to complete its octet.

But we know the atom having 5,6,7 electrons in its outermost shell they do not lose, they gain either 3 or 2 or 1 electrons to complete its octet.

So we say that atom with the electron configuration 2-8-6 bond with the atom having electron configuration 2-8-2.

8 0
3 years ago
How many atoms are in 20.6 moles of curium
Harman [31]

Answer: 1.24 × 10^25

Explanation:

\frac{20.6 moles}{1} × \frac{6.022 * 10^{24} }{1 Mole}

Using our knowledge in unit conversions, we know the mole units cancel each other out and all there's left is the atom unit. From here we can multiply the fractions and eventually we end with the number 124.0532 × 10^23

According to the scientific notation rules, the number to the left of the decimal cannot exceed 10 so we have to move the decimal to the left two spaces. With this change, we also have to change the exponent of the 10. Because we moved the decimal point two spaces to the left, that means we have 10^25.

4 0
3 years ago
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