Q4 MOD 2 ACTVITY 1 CHEMICAL EQUILIBRIUM

Quiz by Apple Olita

General Chemistry 2
Philippines Curriculum: SHS Specialized Subjects (MELC)

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### Measures 1 skill fromGrade 11General Chemistry 2Philippines Curriculum: SHS Specialized Subjects (MELC)

STEM_GC11CEIVb-e-145

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10 questions
• Q1

2A + 3B  <---->  2AB

The forward reaction forms the substance __________.

A

A+B

B

AB

30s
STEM_GC11CEIVb-e-145
• Q2

At what time the reaction reached equilibrium?

t4

t2

t1

t3

30s
STEM_GC11CEIVb-e-145
• Q3

Identify the labels (a) and (b) on the graph.

a is concentration of product and b is the concentration of reactant

a the mass of reactants and b is the mass of product

a is concentration of reactants and b is the concentration of product

a is the volume of reactants and b is the volume of product

30s
STEM_GC11CEIVb-e-145
• Q4

Which of the two graphs reaches equilibrium?

Neither.

Both of them

The right one.

The left one.

30s
STEM_GC11CEIVb-e-145
• Q5

What are the two factors to look for when determining if the reaction is at equilibrium?

Forward reaction rate is faster than the reverse and concentrations are equal

Forward and revers reaction rates are equal and concentration is equal

Forward reaction rate is faster than the reverse and concentration is equal

Forward and reverse reaction rates are equal and concentration is constant

30s
STEM_GC11CEIVb-e-145
• Q6

When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in?

Chemical Balance

Stoichiometry

Chemical Equilibrium

Chemical Reaction

30s
STEM_GC11CEIVb-e-145
• Q7

Which of the following is the condition needed to establish the equilibrium?

All reactants and products should be in closed system

Constant Temperature

All of the above

Products and reactants should be in constant dynamic motion

30s
STEM_GC11CEIVb-e-145
• Q8

Which of the following is NOT true at equilibrium?

The forward and reverse reactions continue to occur.

The concentrations of reactants and products do not change.

The concentration of the reactants is equal to the concentration of the products.

The forward and reverse reactions proceed at the same rate.

30s
STEM_GC11CEIVb-e-145
• Q9

Which of the following equations are correctly balanced?

12CO2 + H2O ---> C6H12O6 + O2

CO2 + 9H2O ---> C6H12O6 + O2

6CO2 + 6H2O ---> C6H12O6 + 6O2

CO2 + H2O ---> 3C6H12O6 + O2

30s
STEM_GC11CEIVb-e-145
• Q10

Is the following reaction balanced?NaHCO3 --> Na2CO3 + H2O + CO2

false
true
True or False
30s
STEM_GC11CEIVb-e-145

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