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eimsori [14]
2 years ago
7

True or false(Internal forces act on the outside of an object, and external forces act within an object.)

Chemistry
1 answer:
kkurt [141]2 years ago
4 0
False I’m not sure exactly
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For a particular redox reaction, NO-2 is oxidized to NO-3 and Ag+ is reduced to Ag . Complete and balance the equation for this
Salsk061 [2.6K]

The following are the steps  to complete and balnce the equation for the given reaction

<u>Explanation:</u>

We are given, NO2– is oxidized to NO3– and Ag is reduced to Ag

NO2– + Ag+ -----> NO3– + Ag(s)

Step 1) Assign the oxidation state to each element reaction

NO2– + Ag+ -----> NO3– + Ag(s)

N= +3                           N = +5                        

O = -2                            O = -2

Ag = +1                         Ag = 0

NO2– -----> NO3– ………oxidation half reaction

Ag+ -----> Ag(s) ……….reduction half reaction

Step 2) Balance the element other than O and H

     NO2– -----> NO3–

     Ag+ -----> Ag(s)

Step 3) Balance the O by adding 1 H2O for 1 O

     NO2– + H2O -----> NO3–

     Ag+ -----> Ag(s)

Step 4) Balance the H by adding H+

    NO2– + H2O -----> NO3– + 2H+

     Ag+ -----> Ag(s)

Step 5) Balance the charge by adding electron

    NO2– + H2O -----> NO3– + 2H+ + 2e-

     Ag+ + 1e------> Ag(s)

Step 6) Balance the electron in both half reaction

    NO2– + H2O -----> NO3– + 2H+ + 2e-

     2 Ag+ + 2e------> 2 Ag(s)

3 0
3 years ago
"The statements in the following multiple choices deal with various aspects of the relationship between vapor pressure and inter
solong [7]

Answer:

Explanation:

a ) false.

NH₃ is more polar molecule than PH₃ so inter-molucular attraction is greater in NH₃ ( hydrogen bond ) . Hence vapour pressure is low for NH₃ .

b ) false .

The average kinetic energy of boiling water molecules is lower on a mountaintop than it is at sea level. It is so because water boils at lower temperture on mountain and kinetic energy of molecules depends upon temperature .

c ) false

vapour pressure depends upon temperature .

d ) True

CCl4 is more volatile than CBr4

e ) false

vapour pressure increases as temperature increases.

8 0
3 years ago
A chemical equilibrium between gaseous reactants and products is shown.
fenix001 [56]

Explanation:

Question 1:

It will shift toward the reactant side as there are a greater number of moles of gas on the reactant side.

Pressure changes only affects only equilibrium involving a gas or gases. An increase in pressure shifts the equilibrium in the direction of the reaction with lower volume.

                 N₂  + 3H₂   ⇆   2NH₃

                        4                  2

An increase in pressure will shift the equilibrium towards the product side.

If the pressure is decreased, equilibrium will shifts towards the side of the reactants. This is because the volume of the reactants are higher than that of the product.

Question 2:

True

Based on Le Chatelier's principle, an increase in temperature will shift the equilibrium position towards the products in an endothermic reaction.

An endothermic reaction is a reaction that absorbs heat from the surroundings.

A rise in temperature shifts equilibrium position to the direction that absorbs the heat and vice versa.

In an endothermic reaction, the forward reaction absorbs the heat and therefore equilibrium shifts towards the side of product.

Question 3:

Decreasing the pressure              A) Shift to the left

Adding hydrogen gas                   B) Shift to the right

Adding a catalyst                          C) No effect

                N₂  + 3H₂   ⇆   2NH₃

Pressure : Decreasing the pressure will shift the equilibrium position to the left. In reactions involving gases, increase in pressure favors the side with a lesser volume. An increase in pressure will favor the formation of ammonia as a product.

A decrease in pressure shifts the equilibrium to the left towards the side of high volume.

Concentration: addition of hydrogen gas will increase the concentration of the gas. An increase in concentration favors the side that uses up the specie and lowers it concentration.

If the concentration of hydrogen gas is increased the equilibrium will shift to the right to annul the concentration of reactants that has increased.

Catalyst: Catalysts have no effect on the position of chemical equilibrium. It only affects the rate at which equilibrium can be reached.

Question 4:

Adding more of gas C to the system

The change that would shift the equilibrium system to the left is by adding more of gas C to the system.

This will increase the concentration of gas C, in order to annul this, the equilibrium will shift to the left.

  • Heating the system will shift the equilibrium to the right
  • Increasing volume only affects purely gaseous reactions.
  • Removing some of gas C from the system shifts the equilibrium to the right.

Question 5:

Heating the system

This is an exothermic reaction because enthalpy change is negative. A rise in temperature shifts equilibrium position to the direction that absorbs heat.

In an exothermic reaction, heat is given off in the forward process. The reverse process is endothermic and heat is absorbed.

Therefore, heating the system will shift the equilibrium to the left and heat is absorbed.

Question 6:

This reaction is exothermic because the system shifted to the left on heating.

It is right to conclude that this reaction is exothermic because the system shifted to the left on heating .

Since the reaction turned dark brown on heating, it shows that more of the reactant Nitrogen dioxide gas was produced.

We can see that the reaction is exothermic in the forward process. An increase in temperature shifts equilibrium position backward to the side that absorbs the heat. This allows for the production of more nitrogen dioxide.

Question 7:

Shift it toward the reactants

A decrease in the concentration of the reactants shift the reaction towards the sides of the reactants.

An increase in concentration of a specie favors the direction that uses up that specie and lowers its concentration.

If the concentration of a specie on the reactant side is increased, equilibrium shifts to the right where more products are formed.

if we decrease the concentration of reactants, the products will be more concentrated and the equilibrium will shift to the left i.e the reactant side.

Learn more:

Equilibrium constant brainly.com/question/11126965

#learnwithBrainly

3 0
3 years ago
How is the nuclear structure of an atom similar to the nonnuclear structure?
kvv77 [185]

Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The chapter on atoms, molecules, and ions introduced the basic idea of nuclear structure, that the nucleus of an atom is composed of protons and, with the exception of  

7 0
3 years ago
Which of the following is true regarding the transition elements?
e-lub [12.9K]
Pls complete your question
8 0
3 years ago
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