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
Oxana [17]
3 years ago
15

Suppose of nickel(II) chloride is dissolved in of a aqueous solution of potassium carbonate. Calculate the final molarity of chl

oride anion in the solution. You can assume the volume of the solution doesn't change when the nickel(II) chloride is dissolved in it.
Chemistry
1 answer:
stich3 [128]3 years ago
3 0

Answer: Molarity of chloride anion = 0.32 M

<em>Note: the question is missing some values. The full question is given below;</em>

<em>Suppose 7.26 g of nickel(II) chloride is dissolved in 350 mL of a 0.50 M aqueous solution of potassium carbonate. Calculate the final molarity of chloride anion in the solution. You can assume the volume of the solution doesn't change when the nickel(II) chloride is dissolved in it. Be sure your answer has the correct number of significant digits.</em>

Explanation:

Molarity or molar concentration is the number of moles (mol) of component per volume (liters) concentration of solution in mol/L or M

The mass of nickel (II) chloride is 7.26 g.

The volume of potassium carbonate is 350 mL = 0.35 L

The molarity of potassium carbonate solution is 0.50 M

The reaction of nickel (II) chloride and potassium carbonate is given below.

NiCl₂(aq) + KCO₃(aq) --------> KCl(aq) +NiCO₃(s)

The dissociation of nickel (II) chloride is given below.

NiCl₂   -----> Ni²⁺ + 2Cl⁻

The molar mass of nickel (II) chloride is  129.6 g/mol

The moles of nickel (II) chloride can be calculated by the formula given below;

No of moles  = mass(g) / molar mass (g/mol)

No of moles = 7.26 / 129.6 = 0.056 moles

Therefore, molarity of NiCl₂ = 0.056 moles/ 0.35 L = 0.16 M

The molarity of 1 mole nickel (ii) chloride is 0.16 m and according to dissociation of nickel (II) chloride, 1 mole of nickel (II) chloride gives 2 moles of chloride anion.

Therefore, the molarity of chloride anion = 0.16 * 2 = 0.32 M

You might be interested in
Discoveries made by scientists that led to the cell theory
xeze [42]

Answer:

Three scientists are credited with the development of cell theory. Matthias Schleiden observed that all plants were made of cells; Theodor Schwann observed that all animals were also made of cells; and Rudolf Virchow observed that cells only come from other cells.

Explanation:

3 0
3 years ago
Which Group 2A element would you expect to be the most reactive?
ahrayia [7]

Answer:

Calcium

Explanation:

It has the largest atom

8 0
3 years ago
Og is the noble gas after rn. to go from [rn] to [og], you must fill four subshells (s, p, d, and f) with a total of 32 electron
Juliette [100K]

Answer : 50 electrons are needed to fill all five subshells

Explanation :

To move from Rn to Og, we need to fill 4 subshells which are s, p d & f.

The maximum number of electrons that can be added to each orbital are given below.

s = 2 e⁻

p = 6 e⁻

d = 10 e⁻

f = 14 e⁻

If we add all these electrons, we get 2 + 6 + 10 + 14 = 32 electrons.

We need to add 32 electrons to the atomic number of Rn to get the atomic number of Og.

Hence we say that the atomic numbers of 6th and 7th period elements of the same group differ by 32.

To go from Og to the next noble gas, we have to theoretically fill 5 subshells.

The maximum electrons that can be added to g orbital are 18.

Therefore in order to go from Og to next element, we would add

2 + 6 + 10 + 14 + 18 = 50 electrons.

50 electrons are needed to fill all five subshells.


5 0
3 years ago
Read 2 more answers
Which of these terms describes the expression of an organism’s genes?
stiks02 [169]

Answer:

genotype, it refers to the genetic makeup of an organism

Explanation:

7 0
3 years ago
PLEASE PLEASE PLEASE HELP:
My name is Ann [436]
I know the answer but i really don’t
6 0
2 years ago
Other questions:
  • Give the complete electronic configuration for oxygen. 1s22s22px22pz2 1s22s22px4 1s22s22py22pz2 1s22s22px22py2 1s22s22px22py12pz
    10·1 answer
  • The image below shows how wolves and dogs compare to some other animals in the levels of classification.
    6·1 answer
  • During science lab, some students added small pieces of magnesium ribbon to 10 mL of hydrochloric acid. They noticed that bubble
    11·2 answers
  • True or False - when setting up your conversion problems every numerical value must have a unit on it.
    15·1 answer
  • Calculate the value of a gold bar if it weighs 70lbs
    5·1 answer
  • How many grams of hydrogen gas would be produced from the use of 9.5 moles of aluminum
    14·1 answer
  • The inputs for cellular respiration are
    15·2 answers
  • Characteristics of crystal​
    7·1 answer
  • How minimising the use of cars can help save the ozone layer​
    6·1 answer
  • What process created the sand and the soil?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!