Free Printable ELL Level 2 - Equilibrium Observations 1

1.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

COLOURLESS COLOURLESS GREEN GAS

What is observed if the pressure is decreased

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

2.

N₂O₄_(g) ⇌ 2NO₂_(g) ∆H = + 57.2 kJ.mol^-1

(N₂O_{4 (g)} _is colourless ) (NO_2(g) is brown)

INCREASE TEMPERATURE

a)

No change

b)

Lighter brown

c)

Darker brown

d)

Can not tell from information given

3.

BiCl₃ + H₂O ⇌ BiOCl + 2HCl

(BiCl₃ is Colourless ) (BiOCl is milky)

Adding water

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

4.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

INCREASE TEMPERATURE

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

5.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

REMOVE hydrogen gas

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

6.

BiCl₃ + H₂O ⇌ BiOCl + 2HCl

(BiCl₃ is Colourless ) (BiOCl is milky)

Adding HCl

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

7.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

ADD A CATALYST

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

8.

BiCl_3(aq) + H₂O_(l) ⇌ BiOCl_(s) + 2HCl_(aq)

(BiCl₃ is Colourless ) (BiOCl is milky)

Change pressure

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

9.

N₂O₄_(g) ⇌ 2NO₂_(g) ∆H = + 57.2 kJ.mol^-1

(N₂O_{4 (g)} _is colourless ) (NO_2(g) is brown)

INCREASE PRESSURE

a)

No change

b)

Lighter brown

c)

Darker brown

d)

Can not tell from information given

10.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

DECREASE TEMPERATURE

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

11.

N₂O₄_(g) ⇌ 2NO₂_(g) ∆H = + 57.2 kJ.mol^-1

(N₂O_{4 (g)} _is colourless ) (NO_2(g) is brown)

DECREASE PRESSURE

a)

No change

b)

Lighter brown

c)

Darker brown

d)

Can not tell from information given

12.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

ADD HI gas

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

13.

BiCl_3(aq) + H₂O_(l) ⇌ BiOCl_(s) + 2HCl_(aq) Endothermic reaction

(BiCl₃ is Colourless ) (BiOCl is milky)

Cool down

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

14.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

ADD hydrogen gas

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

15.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

REMOVE HI gas

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

16.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

INCREASE TEMPERATURE

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

17.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

ADD PCl₅

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

18.

BiCl_3(aq) + H₂O_(l) ⇌ BiOCl_(s) + 2HCl_(aq) Endothermic reaction

(BiCl₃ is Colourless ) (BiOCl is milky)

ADD A CATALYST

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

19.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

DECREASE TEMPERATURE

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

20.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

ADD PCl₃

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

21.

H₂ _(g) + I₂ _(g) ⇌ 2HI _(g) Enthalpy is -ve

(H_2(g) and HI_(g) are colourless ) (I_2(g) is purple)

INCREASE PRESSURE

a)

No change

b)

Purple fades

c)

Darker purple

d)

Can not tell from information given

22.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

INCREASE PRESSURE

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

23.

BiCl_3(aq) + H₂O_(l) ⇌ BiOCl_(s) + 2HCl_(aq) Endothermic reaction

(BiCl₃ is Colourless ) (BiOCl is milky)

Heat up

a)

No change

b)

More milky

c)

Less milky

d)

Can not tell from information given

24.

N₂O₄_(g) ⇌ 2NO₂_(g) ∆H = + 57.2 kJ.mol^-1

(N₂O_{4 (g)} _is colourless ) (NO_2(g) is brown)

ADD A CATALYST

a)

No change

b)

Lighter brown

c)

Darker brown

d)

Can not tell from information given

25.

PCl₅_(g) ⇌ PCl₃_(g) + Cl₂_(g) Endothermic

(PCl_5(g) and PCl₃_(g) are colourless ) (Cl₂_(g) is green)

ADD A CATALYST

a)

No change

b)

green fades

c)

Darker green

d)

Can not tell from information given

26.

N₂O₄_(g) ⇌ 2NO₂_(g) ∆H = + 57.2 kJ.mol^-1

(N₂O_{4 (g)} _is colourless ) (NO_2(g) is brown)

DECREASE TEMPERATURE

a)

No change

b)

Lighter brown

c)

Darker brown

d)

Can not tell from information given

ELL Level 2 - Equilibrium Observations 1

Total questions: 26

Worksheet time: 13mins

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