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Accel Sem 2 Units 7 & 8 Review

Total questions: 22

Worksheet time: 44mins

Name
Class
Date
1.

What letter represents the melting point?

a)

A

b)

B

c)

C

d)

D

e)

E

2.

What letter represents the gaseous phase in the diagram?

a)

A

b)

B

c)

C

d)

D

e)

E

3.

How are pressure and temperature related?

a)

directly

b)

indirectly

4.

If pressure increases the volume ________.

a)

increases

b)

decreases

c)

stays the same

5.

If the temperature increases then the volume _______.

a)

increases

b)

decreases

c)

stays the same

6.

If the # of moles increases then the pressure _______ which would be a ______ relationship.

a)

increases, direct

b)

decreases, direct

c)

increases, indirect

d)

decreases, indirect

7.

If a sample of methane is 1000 mL at 98.6 kPa and  25 oC  is given a  pressure of 108.5 kPa and a volume of 900 mL, what is the temperature?

a)

3.23 x 107

b)

295

c)

248

d)

301

8.

How many moles of gas are in a 30.0 liter scuba  canister if the temperature of the canister is 300.0 K and  the pressure is 200.0 atmospheres?

a)

244

b)

0.00411

c)

2.44 x 104

d)

20

9.

If excess HCl is dripped onto 15.0 g of KMnO4, what  volume of Cl2 will be produced at 15 ◦C and 0.959 atm?

2 KMnO4(aq) + 16 HCl(aq) --­­> 2 KCl(aq) + 2 MnCl2(aq) + 8 H2O(l) +5 Cl2(g)

a)

2.34 L

b)

5.84 L

c)

18.7 L

d)

0.304 L

10.

How many liters does 3.75 mol of nitrogen gas occupy  at STP?

a)

6.00 L

b)

0.167 L

c)

84.0 L

d)

0.308 L

11.

A quantity of water is heated from 25.0 oC to 36.4 oC by absorbing 325 J of heat energy. What is the mass of the water?

a)

15500

b)

0.147

c)

3710

d)

6.81

12.

If the total air pressure in a furnace is 0.99 atm, and the partial pressure of carbon dioxide is 0.05 atm, and the partial pressure of hydrogen sulfide is 0.02 atm, what is the partial pressure of the remaining air

a)

1.06

b)

0.07

c)

0.92

d)

14.1

13.

Estimate the amount of energy absorbed/released for the reaction below using bond energies: H2 (g) + Cl2 (g) --> 2 HCl (g)

a)

-184 kJ

b)

-1540 kJ

c)

184 kJ

d)

247 kJ

14.

+ΔH

a)

endothermic

b)

exothermic

15.

H2O(l) --> H2O(g)

a)

endothermic

b)

exothermic

16.

-ΔH

a)

endothermic

b)

exothermic

17.

2H2O2 (l) --> 2H2O(l) + O2 (g) + 200kJ

a)

endothermic

b)

exothermic

18.

> H2O(l) --> H2O(s)

a)

endothermic

b)

exothermic

19.

2 N2O5 (g) + 110 kJ --> 4NO2 (g) + O2 (g)

a)

endothermic

b)

exothermic

20.

Calculate the ΔHrxn for the following equation.

NaOH(s) + HCl(g) ----> NaCl(s) + H2O(g)

a)

134.9 kJ

b)

-149.5 kJ

c)

-134.9 kJ

d)

149.5 kJ

21.

If the standard enthalpy of formation of H2SO4 (l) is -812.2 kJ/mol, calculate the amount of energy released when 1000 g of sulfur trioxide reacts according to the equation: SO3 (g) + H2O(l) --> H2SO4 (l)

a)

12.5 kJ

b)

10,145 kJ

c)

812,200 kJ

d)

1.23 kJ

22.

Calculate the free energy for this reaction at 298 K (room temperature). Determine if the reaction is spontaneous.

O2 + O --> O3

ΔH = -106.5kJ

ΔS = -127.4 J/K

a)

68.5 kJ

spontaneous

b)

-68.5 kJ

nonspontaneous

c)

-68.5 kJ

spontaneous

d)

68.5

nonspontaneous