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
MatroZZZ [7]
3 years ago
15

An aqueous solution of calcium hydroxide is electrolysed using carbon electrodes.

Chemistry
2 answers:
evablogger [386]3 years ago
6 0
In the anode, the oxygen in the hydroxide ion will be oxidized produced oxygen gas. This gas will be liberated in the anode.
The mass of the anode will decrease because the Carbon in the electron reacts with Calcium to form Calcium carbonate which is the white precipitate.
Sedaia [141]3 years ago
5 0

Answer:

1) Oxygen will be liberated at anode

2) White precipitate is due to the formation of calcium carbonate CaCO3

Explanation:

1) The reactions at the anode and cathode involving the electrolysis of Ca(OH)2 are:

Cathode (reduction):

Ca^{2+}+2e^{-}\rightarrow 2Ca

Anode (oxidation):

4OH^{-}(aq)\rightarrow 2H_{2}O(l)+O_{2}(g)+4e^{-}

Thus oxygen gas will be liberated at anode

2) At the anode the O₂ gas reacts with the carbon (C) electrode to form CO₂ which then reacts with Ca(OH)₂ to form a white precipitate of CaCO₃.

You might be interested in
What is changed when matter undergoes a physical change?
Furkat [3]
I think its the mass that changes but im not sure
3 0
3 years ago
Please help!!
Zinaida [17]
1.B
6.D 
D because t<span>he mass of one mole (molar mass) of helium gas is </span>4.002602 g/mol. 4.002602 * 5=20.01309. Rounded equals 20. So, the answer is D.20 g.
8 0
3 years ago
How many grams of oxygen are needed to react with 4.6 grams of titanium(IV) chloride
velikii [3]
The answer is: 0.78g
6 0
3 years ago
Metal cations are atoms that have a positive charge. What type of bond is a metal cation likely to form? A. covalent bond B. dou
Lunna [17]

Answer:

D. ionic bond

Explanation:

Due to electron deficiency in a metal cation, they cannot form a covalent bond beacuse it means to share electrons. By contrast metal cation seek for electrons. In an ionic bond, one atom give electrons, while another atom recevie electron. Because of that, this is the better option to metal cations.

4 0
3 years ago
Which statement best describes how an existing theory is often affected by the development of new technology?
grigory [225]

Answer: An existing theory is modified so that it can explain both the old and new observations.

Explanation:

4 0
3 years ago
Other questions:
  • Josh is studying pH calculations and tests a basic solution with a pH meter. He finds that the solution has a pH equal to 9.2. W
    15·1 answer
  • Which one is it? Please help
    12·1 answer
  • Calculate the molecular weights for NH3 and SF6.
    8·1 answer
  • What is the least amount of energy that can be emitted by an excited electron in a hydrogen atom falling from an excited state d
    5·2 answers
  • The Hoover Dam in Nevada, supplied by Lake Mead, generates hydroelectric power for several western states, including the numerou
    13·2 answers
  • 2. Is it true thatOnly the stratosphere contains enough air for living things to breathe?
    6·1 answer
  • If an electromagnetic wave has a frequency of 4.5 x 10^18 Hz, what is its wavelength? The speed of light is 3 x 108 m/s.
    7·1 answer
  • A disadvantage of corporations is that shareholders have to pay blank on profits
    10·2 answers
  • Which of the following choices are the characteristics of life
    13·1 answer
  • Which of the following is true about gravity? Select all that apply.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!