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4 years ago

Which substance in this redox reaction is the oxidizing agent?

Chemistry

1 answer:

zepelin [54]4 years ago

6 0

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

<u>Explanation:</u>

Oxidizing agent is the agent which oxidizes the other substance and itself gets reduced. It undergoes reduction reaction in which, it gains electrons and also the oxidation state of the substance gets reduced.

Reducing agent is the agent which reduces the other substance and itself gets oxidized. It undergoes oxidation reaction in which, it looses electrons and the oxidation state of the substance is increased.

For the given chemical equation:

$Cu+2AgNO_3\rightarrow 2Ag+Cu(NO_3)_2$

Half reactions for the given chemical reaction:

$Cu\rightarrow Cu^{2+}+2e^-$

Copper is loosing 2 electrons, thus it is undergoing oxidation reaction and is considered as a reducing agent.

$Ag^++e^-\rightarrow Ag$

Silver ion is gaining 1 electron per atom, thus it is undergoing reduction reaction and is considered as an oxidizing agent.

Hence, $AgNO_3$ is considered as an oxidizing agent and therefore the correct answer is Option B.

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Given you have 1.93 mols of NaCl, find the molarity of a 2.5 L solution

Inessa [10]

Answer:

0.77 M

Explanation:

Molarity is the concentration of a solution per liter

C= concentration

n= number of moles

V= volume of solution

The formula we will use is C= n/V

C= n/V

C= (1.93 mol NaCl)/(2.5 L of solution)

C= 0.772 mol/L

Since this concentration is given in moles per liters of a solution, this concentration is also the molarity.

C= 0.772 mol/L

*Include two significant digits in final answer*

M= 0.77 M

5 0

3 years ago

In a classroom which comparison would a teacher most likely use for describing a mole

irina [24]

Mole - one of the most important concepts in chemistry - is a kind of link to go from the microworld of atoms and molecules in a normal macrocosm grams and kilograms.
In chemistry often have to consider large numbers of atoms and molecules. For fast and efficient calculation made using the weighing method. But it is necessary to know the weight of individual atoms and molecules. In order to identify the molecular weight must be added the weight of all atoms in the compound.

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4 years ago

HELP ASAP PLEASE!!!

puteri [66]

1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.

2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).

3. A pure substance is pure, while a mixture is impure.

8 0

3 years ago

What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total vol

riadik2000 [5.3K]

Solution :

Molecular mass of NaOH is 23 g/mol .

So, number of moles of NaOH is given by :

$n = \dfrac{10}{40}\ mole$