chemistry 2

36問 • 1年前

問題一覧

The following reaction is given: N2(g)+3H2(g)—><—2NH3(g)+Q. Indicate which of the listed effects will not lead to an increase in the equilibrium concentration of the product of the reaction.

Increase in temperature

Which two ions have the same electron configuration?

Mg*2+ and F*-

The reaction A(g)+2B(g)—>3B(g) was found to have a kinetic equation of the form v=kcAcB. How will the rate of the reaction change if the volume of the reaction mixture is halved?

It will rise 4 times

Which of the equations express a stage of the synthetic scheme for the industrial production of nitric acid?

4NH3+5O2–>4NO+6H2O

Which of the described processes does NOT release hydrogen?

aluminium foil is placed in a container with concentrated nitric acid

Which of the reactions shown is substitutional?

Fe+2HI—>Fel2+H2

In a closed equilibrium system had constant pressure and temperature ,oxygen, carbon dioxide and carbon monoxide are found. The temperature in the system rises sharply and then remains constant. State what will be observed in the system if the reaction between oxygen and carbon monoxide is exothermic: A)The amount of oxygen will increase B)the amount of carbon monoxide will decrease C) the amount of carbon (IV) oxide will decrease D)the total amount of molecules will increase

A,C,D

State the process in which metal undergoes reduction

Reaction of Cooper (ll) oxide with hydrogen during heating

In which of the equilibrium systems does not the equilibrium shift in the same direction as temperature decreases and pressure increases?

C3H8(g)—><—C3H4(g)+2H2(g)-Q

Iron (lll) oxide is completely dissolved in the required amount of diluted sulfuric acid. A zinc granule is placed in the resulting solution. Indicate the type of the reaction that does not occur in the described experiment.

Reversible reaction

Which of the reactions is NOT a redux one?

(CuOH)2CO3–>2CuO+CO2+H2O

Which of the listed substances has a molecular crystal lattice in a solid aggregate state?

White phosphorus

Ammonia is passed through a solution of nitric acid, resulting in substance A. A concentrated solution of potassium hydroxide is then added to it on heating resulting in substance B. Nitrogenous substance B is:

Ammonia

Bromine reacts with all substances in the order

C2H6, NaI, Zn

Consider the reaction: 2NO(g)+Cl2(g)—><—2NOCl(g); ΔH>0 ,Which of the following conditions maximise the amount of Cl2(g) present at equilibrium?

Low temperature, low pressure

Which statement is NOT correct for the reaction N2(g)+O2(g)—><—2NO(g)?

The value of a equilibrium constant is the same at all temperatures

Which of the following statements about H2SO3, a diprotic acid is true ?

There is just one lone pair in the sulfur atom

For a reversible exothermic reaction, what is the effect of increasing temperature on the equilibrium constant (Keq) and on the forward rate constant (Kf)

Keq decreases and Kf increases

Which compound decolourises bromine in CHCl3

1-hexene

How many isomers exist for dibromobenzene (C6H4Br2)?

Three

What is the correct name for CCl4?

Tetrachloromethane

Which of the following region can be used to distinguish phenol from benzyl alcohol?

FeCl3

Give the IUPAC name of this compound: CH3OCH2CH3

methoxyethane

Which of the following compounds display optical isomerism?

CH3-CHCl-COOH

Which of the following segments is false regarding the reaction between Cl2 and C2H6

The reaction will give a single product of C2H5Cl

Ethanol can be oxidised stepwise . What is the first table intermediate product when ethanol is oxidised with a mild oxidation agent?

CH3CHO

Hydrolysis (saponification) of a fat would yield

Glycerol and soap

The segment -CH2CH2CH2CH2CH2CH2- represents the polymer named

polyethylene

The products of cracking are

alkane+alkene

What is the major organic products of a reaction CH3C-=CH+2HBr

CH3CBr2CH3

Which of the following reacts with [Ag(NH3)2]OH giving a white precipitate?

CH3CH2C-=CH

Which of the following is correct name for (CH3)2C=CHCOCH3

4-methyl1-3-penten-2-one

As a result of the interaction of acetylene with water in the presence of salts of divalent mercury ions the following is formed

CH3CHO

Sucrose dissolved in water is

Disruption of the sucrose crystal lattice

Linolenic acid as opposed to stearin acid

Decolourises bromine water

How is the compound HOCH2(CHOH)4CH2OH obtained?

By reduction with hydrogen from glucose and fructose

chemistry

chemistry

organic

organic

問題一覧

The following reaction is given: N2(g)+3H2(g)—><—2NH3(g)+Q. Indicate which of the listed effects will not lead to an increase in the equilibrium concentration of the product of the reaction.

Increase in temperature

Which two ions have the same electron configuration?

Mg*2+ and F*-

The reaction A(g)+2B(g)—>3B(g) was found to have a kinetic equation of the form v=kcAcB. How will the rate of the reaction change if the volume of the reaction mixture is halved?

It will rise 4 times

Which of the equations express a stage of the synthetic scheme for the industrial production of nitric acid?

4NH3+5O2–>4NO+6H2O

Which of the described processes does NOT release hydrogen?

aluminium foil is placed in a container with concentrated nitric acid

Which of the reactions shown is substitutional?

Fe+2HI—>Fel2+H2

A,C,D

State the process in which metal undergoes reduction

Reaction of Cooper (ll) oxide with hydrogen during heating

In which of the equilibrium systems does not the equilibrium shift in the same direction as temperature decreases and pressure increases?

C3H8(g)—><—C3H4(g)+2H2(g)-Q

Reversible reaction

Which of the reactions is NOT a redux one?

(CuOH)2CO3–>2CuO+CO2+H2O

Which of the listed substances has a molecular crystal lattice in a solid aggregate state?

White phosphorus

Ammonia

Bromine reacts with all substances in the order

C2H6, NaI, Zn

Consider the reaction: 2NO(g)+Cl2(g)—><—2NOCl(g); ΔH>0 ,Which of the following conditions maximise the amount of Cl2(g) present at equilibrium?

Low temperature, low pressure

Which statement is NOT correct for the reaction N2(g)+O2(g)—><—2NO(g)?

The value of a equilibrium constant is the same at all temperatures

Which of the following statements about H2SO3, a diprotic acid is true ?

There is just one lone pair in the sulfur atom

For a reversible exothermic reaction, what is the effect of increasing temperature on the equilibrium constant (Keq) and on the forward rate constant (Kf)

Keq decreases and Kf increases

Which compound decolourises bromine in CHCl3

1-hexene

How many isomers exist for dibromobenzene (C6H4Br2)?

Three

What is the correct name for CCl4?

Tetrachloromethane

Which of the following region can be used to distinguish phenol from benzyl alcohol?

FeCl3

Give the IUPAC name of this compound: CH3OCH2CH3

methoxyethane

Which of the following compounds display optical isomerism?

CH3-CHCl-COOH

Which of the following segments is false regarding the reaction between Cl2 and C2H6

The reaction will give a single product of C2H5Cl

Ethanol can be oxidised stepwise . What is the first table intermediate product when ethanol is oxidised with a mild oxidation agent?

CH3CHO

Hydrolysis (saponification) of a fat would yield

Glycerol and soap

The segment -CH2CH2CH2CH2CH2CH2- represents the polymer named

polyethylene

The products of cracking are

alkane+alkene

What is the major organic products of a reaction CH3C-=CH+2HBr

CH3CBr2CH3

Which of the following reacts with [Ag(NH3)2]OH giving a white precipitate?

CH3CH2C-=CH

Which of the following is correct name for (CH3)2C=CHCOCH3

4-methyl1-3-penten-2-one

As a result of the interaction of acetylene with water in the presence of salts of divalent mercury ions the following is formed

CH3CHO

Sucrose dissolved in water is

Disruption of the sucrose crystal lattice

Linolenic acid as opposed to stearin acid

Decolourises bromine water

How is the compound HOCH2(CHOH)4CH2OH obtained?

By reduction with hydrogen from glucose and fructose