1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AlladinOne [14]
3 years ago
15

A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound res

ulted in the formation of carbon dioxide. Which one of the following cations would form a precipitate when added to an aqueous solution of this compound?
Chemistry
1 answer:
quester [9]3 years ago
3 0

A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound resulted in the formation of carbon dioxide. Which one of the following cations would form a precipitate when added to an aqueous solution of this compound?

Options

a. NH4

b. K

c. Cr

d. Rb

e. Na

Answer: c: Cr

Explanation:

The aforementioned reaction are banters for to distract ones focus from the question.

However it should be noted that

Cr can be found in tannery waste water showing that it can be soluble in water.

The carbonate compound when reacting with acid CO_2 evolves.

Focusing on the cation that would form a precipitate when added to an aqueous solution.

Chemical precipitation method is a common method for to remove chromium and to recover it from  tannery wastewater.

Cr would form a precipitate.

You might be interested in
What pressure (in atm) is required to contain 0.034 moles of oxygen gas in a 5.1 L container at a temperature of 25.00C
kherson [118]

Answer:

0.16 atm

Explanation:

Let's look at the formula PV=nRT. First of all, T should be in kelvin, so let's add 273. Now solve for P so we get P = nRT/V.

Now let's plug these in...

P = (0.034 mol)(0.08206 L atm mol^-1 K^-1)(298 K)/5.1 L

After solving and rounding to sig figs we get 0.16 atm

5 0
2 years ago
A pendulum has 721 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom o
Sloan [31]

Answer:

721 J  

Step-by-step explanation:

At the bottom of its swing, all the potential energy of the pendulum has been converted to kinetic energy.

KE = 721 J

8 0
3 years ago
Read 2 more answers
To determine the concentration of chloride ion (Cl-) in a 100 mL sample of ground water, a chemist adds a large enough volume of
Orlov [11]

Answer:

[Cl^-]=232.3\frac{mgCl^-}{L}

Explanation:

Hello,

In this case, we can represent the chemical reaction as:

Cl^-(aq)+AgNO_3(aq)\rightarrow AgCl(s)+NO_3^-(aq)

In such a way, since the mass of the obtained silver chloride is 93.9 mg, we can compute the chloride ions in the ground water by using the following stoichiometric procedure whereas the molar mass of chloride ions and silver chloride are 35.45 g/mol and 143.32 g/mol respectively:

m_{Cl^-}=93.3mgAgCl*\frac{1mmolAgCl}{143.32mgAgCl}*\frac{1mmolCl^-}{1mmolAgCl} *\frac{35.45mgCl^-}{1mmolCl^-} =23.23mgCl^-

Finally, for the given volume of water in liters (0.100L), we compute the required concentration:

[Cl^-]=\frac{23.2mgCl^-}{0.100L}\\

[Cl^-]=232.3\frac{mgCl^-}{L}

Best regards.

5 0
4 years ago
Water plays a key role in chemical weathering by
11Alexandr11 [23.1K]
The answer would be D, all the above
5 0
3 years ago
Read 2 more answers
Why are units of measurement useful?
natali 33 [55]

Answer:

B

Explanation:

If you are comparing an amount you are trying to find the quantity or the total of something or the size  therefore answer B is the right answer  

4 0
3 years ago
Other questions:
  • Chemical reactions forming ions do not balance electrically. <br><br> True or False
    15·1 answer
  • A gas occupies a volume of 458 mL at a pressure of 1.0 1K PA and temperature of 295K. when the pressure is changed the volume be
    15·1 answer
  • 3. Which weather technology is used to gather pressure, wind speed, and other first-hand observations of hurricanes that are out
    5·2 answers
  • What is .000000850 in scientific notation
    9·1 answer
  • Match the formula for the following compound: acetic acid HC 2H 3O 2 C 2H 3O 2 H 2C 2H 3O 2 HA
    12·2 answers
  • What does your lunch, your ride to school, and the polar bears lost of habitat have in common ?
    10·2 answers
  • What is the equilibrium constant for the reaction
    7·1 answer
  • The specific heats at constant pressure of some common gases are provided as a thirdorder polynomial: �;&lt;&lt;&lt; = � + �� +
    6·1 answer
  • NaOH + HCl → NaCl + H2O
    14·1 answer
  • If a snail crawls 12 centimeters per hour, how long will it take for the snail to travel 1 meter?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!