Answer:
The chloride ion has a -1 charge and it tends to form such an ion because it wants the octet rule to be complete, and since it has 7 it needs one more for 8 electrons.
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Explanation:
Answer:
Three more electrons
Explanation:
Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:
Explanation:
The principle used in the preparation of these salts is to dissolve
the cystine in an alcoholic alkali solution to which just sufficient
water to effect solution has been added, and, after filtering from
excess cystine, to precipitate the salt by addition of a suitable
indifferent solvent. While various solvents, such as acetone,
ether, or large amounts of alcohol caused precipitations, these were
either oily or amorphous. Only acetonitrile was found to possess
the power of initiating regular crystallization in the salt solutions.
While the solutions of the different salts require different amounts
of the solvent for complete precipitation, a partial substitution of
absolute ether for acetonitrile was found expedient in the case
of the most soluble of the salts, the K salt.
Answer:
It is simply a process of forming crystal.
Explanation: When salt is heated and dissolve in the liquid mainly water then its called saturated solution. When we further add salt and increase heat in order to dissolve it then it forcibly dissolve in liquid it's called supersaturated solution. After we slowly cool down the temperature then the salt we have put in supersaturated solution arises in the form of crystal. Hence its called crystalization.
Answer is: C. Water can dissociate many ionic compounds through ion-dipole interactions.
For example, dissociation of potassium bromide: KBr(aq) → K⁺(aq) + Br⁻(aq).
Some ionic compounds cannot dissociate in water, for example calcium sulfate (CaSO₄), silver chloride (AgCl), lead(II)-carbonate (PbCO₃).
An ion-dipole is electrostatic interaction between a charged ion (cations and anions) and a molecule that has a dipole (in this example water).
Dipole is a separation of positive and negative charges. In water, hydrogen has positive and oxygen has negative charge.
Answer: The mass of ammonia is 5.236 g and that of sulfuric acid is 15.064 g
Explanation:
To calculate the number of moles, we use the equation:
.....(1)
Given mass of ammonium sulfate = 20.3 g
Molar mass of ammonium sulfate = 132.14 g/mol
Putting values in equation 1, we get:
The chemical equation for the reaction of ammonia and sulfuric acid follows:
As, sulfuric acid remains unreacted, which means it is an excess reagent and its starting mass cannot be determined from ammonium sulfate.
By Stoichiometry of the reaction:
1 mole of ammonium sulfate is produced by 2 moles of ammonia.
So, 0.154 moles of ammonium sulfate is produced by = of ammonia.
Now, calculating the mass of ammonia from equation 1, we get:
Molar mass of ammonia = 17 g/mol
Moles of ammonia = 0.308 moles
Putting values in equation 1, we get:
Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that total mass on the reactant side must be equal to the total mass on the product side.
Let the mass of sulfuric acid be 'x' grams
We are given:
Mass of ammonium sulfate = 20.3 grams
Mass of ammonia = 5.236 grams
Total mass on reactant side = 5.236 + x
Total mass on product side = 20.3 g
So, by applying law of conservation of mass, we get:
Hence, the mass of ammonia is 5.236 g and that of sulfuric acid is 15.064 g