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3 years ago

How many ions are present if 2.0 moles of hno3 are completely dissolved in water?

2 answers:

5 0

Nitric acid(HNO3) is a strong acid so most of its component will dissociate into an ion form. When dissolved into water, nitric acid will have this reaction
HNO3= 1 H $^{+}$ + NO3 $^{-}$

For every 1 mol of HNO3, there will be 1 mol of H+ ion and NO3- ion formed, which makes a total of 2 ions(degree of dissociation = 2).
Then for 2 moles of HNO3 it would be: 2 moles * 2= 4 moles of ion

AURORKA [14]3 years ago

4 0

Answer: The number of ions that are present in nitric acid is $2.401\times 10^{24}$

Explanation:

We are given:

Moles of nitric acid = 2.0 moles

1 mole of nitric acid produces 1 mole of hydrogen ions and 1 mole of nitrate ions

Number of ions produced from nitric acid = 2 moles

According to mole concept:

1 mole of an ionic compound produces $6.022\times 10^{23}$ number of ions

So, 2.0 moles of nitric acid produces $(2.0\times 2\times 6.022\times 10^{23})=2.401\times 10^{24}$ number of ions

Hence, the number of ions that are present in nitric acid is $2.401\times 10^{24}$

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Which ionic equation describes a redox reaction? A. Ag(+) + Cl- = AgCl B. 2H(+) + CO3(2-) = CO2 + H2O C. H(+) + OH(-) = H2O D. Z

Gennadij [26K]

Answer: The correct option is D. $Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu$

Explanation:

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously. It is known as the reaction in which the exchange of electrons takes place.

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when the oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when the oxidation number of a species decreases.

From the given ionic reactions:

$Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu$

On the reactant side:

Oxidation number of Zn = 0

Oxidation number of Cu = +2

On the product side:

Oxidation number of Cu = 0

Oxidation number of Zn = +2

As the oxidation number of Zn is increasing from 0 to +2. Thus, it is getting oxidized. Similarly, the oxidation number of Cu is decreasing from +2 to 0. Thus, it is getting reduced. Therefore, forming a redox couple

Hence, the correct option is D. $Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu$

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2 years ago

Give three chemical properties of gasoline.

Dovator [93]

Here are some examples of chemical properties:
Reactivity with other chemicals.
Toxicity.
Coordination number.
Flammability.
Enthalpy of formation.
Heat of combustion.
Oxidation states.
Chemical stability. HOPE THIS HELPS!

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3 years ago

Read 2 more answers

2 grams of hydrogen diffuses from containers in 10 minutes. How many grams of oxygen would diffuse through same container in sam

Leya [2.2K]

Answer:20

Explanation:make sure you thank me

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2 years ago

Famous people who talked about plastic water bottles

drek231 [11]

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3 years ago

How many molecules are there in 6.73 moles of phosphorus trichloride? (write your answer in scientific notation).

anyanavicka [17]

Answer: There are $4.05\times 10^{24}$ molecules in 6.73 moles of phosphorus trichloride

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of $PCl_3$ contains = $6.023\times 10^{23}$ molecules

Thus 6.73 moles of $PCl_3$ contains = $\frac{6.023\times 10^{23}}{1}\times 6.73=4.05\times 10^{24}$ molecules

Thus there are $4.05\times 10^{24}$ molecules in 6.73 moles of phosphorus trichloride

3 0

3 years ago