Write down the steps which correctly describe the steps required to decide whether or not a precipitate forms when two aqueous s
1 answer:
The correct question is as follows.
place the steps required to determine whether or not a precipitate forms when two solutions are mixed in the correct order.
-consider possible cation-anion combinations
-note the ions present in the reactions
-use the solubility rules to determine whether or not either of the combinations gives an insoluble salt
Explanation:
A precipitate is an insoluble substance formed due to chemical reaction between two aqueous solutions. But it is not necessary that two aqueous solutions will always give an insoluble solid substance on chemical reaction with each other.
For e.g.
Here, AgCl is the precipitate formed.
Hence, correct steps that are required to decide whether or not a precipitate forms when two aqueous solutions are mixed:
1). note the ions present in the reactants
2). consider possible cation-anion combinations
3). use the solubility rules to determine whether or not either of the combinations gives an insoluble salt
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Answer:
Option (4) is correct
Explanation:
- NaCl is an ionic solid.
and
ions are held together by strong coloumbic attractive force. Hence NaCl has highest boiling point'
- Ar is a monoatomic molecule. Hence only weak london dispersion force exists between Ar atom/molecules. Hence it requires lowest amount of energy to boil and thereby possess lowest boiling point.
and
are polar protic molecules. Hence they possess london dispersion force, dipole-dipole force and hydrogen bonding as intermolecular forces.
- Dipole-dipole force is stronger in
Hence order of boiling point :
Answer:
Explanation:
Given a reaction mechanism, we will typically have catalysts and intermediates which will not be observed in the final balanced overall reaction. In order to obtain a net reaction, we need to add all the separate steps of the given reaction.
First of all, the reactants are combined followed by a combination of products. The repeating species on both sides of the final equation are then canceled out. Let's sum everything we have in our steps:
Repeating species that can be canceled out are:
This leaves a net reaction of: