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4 years ago

Determine whether an aqueous solution of each of the following salts will be acidic, basic, or neutral. Ba3(PO4)2 NaCN

Chemistry

1 answer:

Andru [333]4 years ago

6 0

Answer: Both the salts are basic salts.

Explanation:

Salts are formed when an acid reacts with a base during a neutralization reaction.

When a strong acid and a weak base reacts, it leads to the formation of acidic salt.

When a strong base and weak acid reacts, it leads to the formation of basic salt.

When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.

$Ba_3(PO_4)_2$ is a salt which is formed by the combination of $H_3PO_4\text{ and }Ba(OH)_2$ . Phosphoric acid is a weak acid and barium hydroxide is a strong base. So, the given salt is a basic salt.

$NaCN$ is a salt which is formed by the combination of $HCN\text{ and }NaOH$ . Hydrogen cyanide is a weak acid and sodium hydroxide is a strong base. So, the given salt is a basic salt.

Hence, both the salts are basic salts.

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Consider the generic acid, HA, and how it interacts with water:HA (aq) + H2O (l) ⇌ H3O+ (aq) + A-Consider the following statemen

luda_lava [24]

Answer:

B. False

A. True

B. False in

Explanation:

From Bronsted-Lowrys definition of Acids and bases, a strong acid is a substance that gives up a proton (to form a weak conjugate base), while a strong base is one that willingly accepts a proton.

Therefore in the reaction,

HA(aq) + H2O (l) ⇌ H3O+ (aq) + A-

The stronger HA is, the weaker the A- and vice versa; the weaker HA is, the stronger A-. Example, HCl is a strong acid and its conjugate base, Cl- is a weak base.

B. False

Electron drawing groups are molecules and/or atoms that enable the release of a proton from a specie. They cause inductive as well as mesomeric effects. Examples, -NO2, -COOH, -OH etc.

Fluoride ion is the most stable in this series because it's the most electronegative while carbon is the least stable because it's the least electronegative. Because of this, we were able to say that H-F was the most acidic, because it had the most stable conjugate base.

A. True.

pKa1 = -log[Ka1]

= -log[1.2 x 10-4]

= 3.92

pKa2 = -log[Ka2]

= -log[1.5 x 10-8]

= 7.82

Using Bronsted-Lowry definition, the smaller the pKa value the more ease the acid loses its proton, that is, the smaller the pKa value, the stronger the acid.

Therefore, pKa2 > pKa1, so Ka value of 1.2 x 10-4 is a stronger acid than Ka value of 1.5 x 10-8

B. False.

7 0

4 years ago

PLEASE LHELP

rosijanka [135]

Answer:

Explanation:

6 moles multiplied 2 atoms of O2

That gives 12 atoms

8 0

3 years ago

I need some help!!! Asap

miss Akunina [59]

Answer:

Al2O3 + 6HCl --> 2AlCl3 + 3H2O

Explanation:

Al: 2

O: 3

H: 6

Cl: 6

Balanced on both sides.

8 0

3 years ago

Help asap!!

Daniel [21]

Answer:

hi your pretty

Explanation:

6 0

3 years ago

If 25.0 mL of 0.100 M Ca(OH)2 is titrated with 0.200 M HNO3, what volume of nitric acid is required to neutralize the base?

Troyanec [42]

Answer:

25 mL

Explanation:

The reaction that takes place is:

Ca(OH)₂ + 2HNO₃ → Ca(NO₃)₂ + 2H₂O

First we calculate how many Ca(OH)₂ moles were spent in the titration:

25.0 mL * 0.100 M = 2.5 mmol Ca(OH)₂

Then we convert Ca(OH)₂ moles into HNO₃ moles, using the stoichiometric ratio:

2.5 mmol Ca(OH)₂ * $\frac{2mmolHNO_3}{1mmolCa(OH)_2}$ = 5.0 mmol HNO₃

Finally we calculate the volume of required nitric acid solution, using the concentration:

5.0 mmol ÷ 0.200 mmol/mL = 25 mL

7 0

3 years ago