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
When we write the formula for an ionic compound, we are merely indicate the "molecules" in the compound with that formula. expla
belka [17]
When writing an ionic compound formula, a "molecular" form is used.  The formula is made with allowance for ion charges.
For example,
Ca²⁺ and NO₃⁻ ⇒ Ca(NO₃)₂
Al³⁺ and SO₄²⁻  ⇒ Al₂(SO₄)₃
3 0
3 years ago
Lithium and fluorine undergo ionic bonding. Using the noble gas electron configurations for each (below), please explain the pro
Slav-nsk [51]

Answer:

Lithium loses one electron to fluorine and forms ionic bond, having formula LiF.

Explanation:

Lithium is the element of the group 1 and period 2 which means that the valence electronic configuration is [He]2s^1.

Fluorine is the element of the group 17 and period 2 which means that the valence electronic configuration is [He]2s^22p^5.

<u>Thus, lithium loses 1 electron and become positively charged. Fluorine on the other hand accepts this electron and become negatively charged.</u> This is done in order that the octet of the atoms are complete.  <u>These both ions then form ionic bond as their will be electrostatic interaction between the two oppositely charged ions.</u>

Thus, the formula of calcium chloride is LiF.

7 0
3 years ago
A hydrogen fuel cell is an electrochemical reactor in which oxygen and hydrogen gas are reacted to produce energy. Rather than c
Contact [7]

Answer:

(d) Why is the fuel cell in Question (c) described as an alkaline fuel cell? (e) Another type of fuel cell uses methanol instead of hydrogen.

Explanation:

6 0
3 years ago
Is weak base drug absorbed in Stomach?
Orlov [11]
Most drugs are salt of either weak acids or weak bases they are absorbed in undissociated lipid soluble form. The dissociation if weak acids is suppressed by low (acid) PH. Thus theoretically one would expect a weak acid to be absorbed primarily in the stomach which has a low ph
7 0
3 years ago
A redox reaction will occur at 298 K when zinc metal is placed in a solution that is 0.5M Fe(NO3)3. Is this true or False.
Anettt [7]

Answer:

True

Explanation:

Fe³⁺ is an oxidizing agent with E° = +0.77V. Zn metal is a reducing agent with E° = -0.76V. This is a "downhill" reaction, where the oxidizing agent has a higher E° than the reducing agent. Therefore, the reaction is spontaneous.

7 0
3 years ago
Other questions:
  • What was the advantageous adaptation mentioned that humans have evolved in order to survive
    14·1 answer
  • In the following reaction: HCO3- (aq) + H2O (aq) → H2CO3 (aq) + OH- (aq)
    11·1 answer
  • Which of the four models represents a solid
    9·1 answer
  • What is the ph of a solution that is 0.50 m in propanoic acid and 0.40 m in sodium propanoate. (ka for propanoic acid = 1.3 x 10
    12·1 answer
  • Two samples of the same compound are compared. what does the data represent? sample 1: 24.22 g carbon and 32.00 g oxygen sample
    8·1 answer
  • En un atomo polielectronico el sbnivel difuso esta constituido de 5 orbitas degenerdos?
    14·2 answers
  • Two out of the three domain groups include prokaryotic organisms true or false
    6·1 answer
  • Pls help me also pls have the correct answer
    5·2 answers
  • What is the name of bird W?
    6·1 answer
  • Describe 2 ways of salting out proteins ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!