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
jenyasd209 [6]
3 years ago
13

Which one of the following equations is not balanced?

Chemistry
2 answers:
nadya68 [22]3 years ago
8 0
<span>The key in the balancing of chemical reaction is to make sure that you got the exact chemical formula of the substance that is reacting and the yielded product. After getting the formula, identify first the hardest element/atom to be balanced such as Na, Zn, Cl, C, O, etc. Then proceed to the easier ones such as O, H. Make sure to note the atoms present in the molecule of the substance. Among the three equations, PCl2 + 4H2O --->H3PO4 + 5HCL is not balanced. The hardest element here is the Cl. Observe that there are 5Cls in the product side so you must add 5 to the PCl2. However, there are only 2Cl atoms and it needs 3 to balance the equation. Also, there is no P in the product side. This equation is invalid.</span>
rewona [7]3 years ago
7 0
The third one is incorrectly balance because the are only two chlorine on the reactant side and five on the product side. The correct balanced equation is 2PCL2 + 8H2O -> 2H3PO4 + 5H2 + 4Cl. The reason HCl is broken into two parts is because it is a strong acid and would immediately dissolve if put together.
You might be interested in
True or False all non - metal elements are gassed at room temperature.​
saul85 [17]

Answer:

false

Explanation:

you have bromine , its a non metal and liquid in room temperature

7 0
3 years ago
Thoughts? this is for chem grade 11
Varvara68 [4.7K]

Answer:

Pb(s)------>Pb2+(aq)

Explanation:

If you look at the oxidation numbers Pb increases from 0 to +2 while Cu decreases from +2 to 0.Hence,Pb is the reducing agent and Cu2+ is the oxidizing agent.

Also, a thing to note is that the oxidation number of  any solid is always 0.

~Hope this helps:)

3 0
3 years ago
Iwsk3eidwujfdujeudcwix vvfedsxdwsx
Sedaia [141]

Answer: :)

Explanation:

7 0
2 years ago
Read 2 more answers
What could you predict about a methane molecule that would most likely be made by using both the quantum model of the atom and J
Svetlanka [38]
By using the quantum model of the atom and John Dalton's model you can predict that the methane molecule will most likely be made up of Hydrogen and Carbon.
5 0
3 years ago
To begin, check that Reaction 1 and Forward are selected. In this reaction, hydrogen (H2) and oxygen (O2) react to form water (H
Kruka [31]

Answer:

The reaction occurs and all H2 and O2 unite to form H20

3 0
3 years ago
Other questions:
  • A carbon-carbon triple bond is found in a molecule of
    6·1 answer
  • why is the law of conservation of mass important to understand when writing chemical formulas and chemical equations​
    6·1 answer
  • Daianluiny VIIGUTIVUI
    12·1 answer
  • What is the enthalpy of reaction?
    10·1 answer
  • In an energy diagram, the reactants are at a higher potential energy compared to the products. Which of the following best descr
    15·1 answer
  • To make your hypothesis an informed one, you need to have _____.
    8·1 answer
  • Determine what type of functional group is present on formaldehyde (CH2O). What property is associated with this group?
    8·1 answer
  • When electrons absorb energy they are able to
    12·1 answer
  • The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 kelvin is called its
    14·1 answer
  • All of the factors described below could account for the difference in the sizes of the tomatoes. Which describes a way in which
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!