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
zimovet [89]
3 years ago
9

(THIS QUESTION IS FROM APEX IN COURSE: Physical Science Sem 2

Chemistry
2 answers:
Tatiana [17]3 years ago
6 0

<u>Answer:</u> The correct answer is Option A and Option B.

<u>Explanation:</u>

Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.

The general equation for this reaction follows:

AB+CD\rightarrow CB+AD

For the given options:

<u>Option A:</u>  HC_2H_3O_2(aq.)+NaHCO_3(aq.)\rightarrow NaC_2H_3O_2(aq.)+H_2CO_3(aq.)

This is considered as a double displacement reaction.

<u>Option B:</u>  NaOH(aq.)+HCl(aq.)\rightarrow NaCl(aq.)+HOH(l)

This is considered as a double displacement reaction.

<u>Option C:</u>  Zn(s)+HCl(aq.)\rightarrow ZnCl_2(aq.)+H_2(g)

This is considered as a single displacement reaction because more reactive metal (zinc) is displacing a less reactive metal (hydrogen).

<u>Option D:</u>  2Cu(s)+O_2(g)\rightarrow 2CuO(s)

This is considered as a synthesis reaction because copper and oxygen are combining in their elemental state to produce a single compound.

Hence, the correct answer is Option A and Option B.

mina [271]3 years ago
4 0

The following double-displacement reactions are fully applied/answered:

A. HC2H3O2(aq) + NaHCO3(aq) → NaC2H3O2(aq) + H2CO3(aq)

B. NaOH(aq) + HCI(aq) → NaCI(aq) + HOH(I)

<em>(The answers are</em> A. & B.<em>)</em>

You might be interested in
What are the 5 areas of chemistry
shepuryov [24]
The 5 main branches of chemistry are physics, analytical, biochemistry, organic chemistry, and inorganic chemistry.
7 0
3 years ago
Newtons second law of motion states that
insens350 [35]

Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force,

Explanation:

3 0
3 years ago
In which orbitals would the valence electrons for selenium (Se) be placed?
RSB [31]
Selenium falls in the same column with oxygen therefore it has the same number of valence electrons with oxygen which is 6. It fills the 3d orbital but only 4s and 4p are counted. The electronic configuration is [Ar]3d^10 4s^2.
8 0
3 years ago
Read 2 more answers
What does a hygrometer measure?
gogolik [260]

Answer:

  • humidity

Explanation:

Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.

3 0
3 years ago
Read 2 more answers
I need help on this it’s due today!!!
stich3 [128]
Atmosphere. You can think of the atmosphere as the outer shell for earth.
6 0
2 years ago
Read 2 more answers
Other questions:
  • Calculate the atomic mass of bromine. The two isotopes of bromine have atomic masses and relative abundance of 78.2 (50.69%) AMU
    14·1 answer
  • Iodine-131, t1/2 = 8.0 days, is used in the diagnosis and treatment of thyroid gland diseases. If a laboratory sample of iodine-
    8·1 answer
  • PLEASE HELP DUE SOON&gt; WILL MARK BRAINLIEST 50 POINTS
    11·2 answers
  • If molecules move from one place to another inside of a cell, which type of communication is this?
    14·1 answer
  • How many molecules of carbon dioxide are in 9.080 x 10 ^-1 mol?
    8·1 answer
  • What is the best definition of "thinking at the margin"? *
    5·1 answer
  • 1) The heat of combustion for the gases hydrogen, methane and ethane are −285.8, −890.4 and −1559.9 kJ/mol respectively at 298K.
    7·1 answer
  • Did they scientist believe in God
    5·1 answer
  • Which is the correct formula for the compound formed between beryllium and nitrogen?
    5·1 answer
  • Please Help I need an explanation on how to do this
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!