KEY3A - A Chemistry 1211K Test III MULTIPLE CHOICE (3...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 1211K Test III MULTIPLE CHOICE (3 points each, put answers on the answer sheet). 1) Of the following, which one is a state function? A) q B) H C) w D) heat E) none of the above 2) The reaction 4Al (s) + 3 O 2 (g) 2 Al 2 O 3 (s) H = -3351 kJ is __________, and therefore heat is __________ by the reaction. A) endothermic, released B) exothermic, absorbed C) endothermic, absorbed D) exothermic, released E) thermoneutral, neither released nor absorbed 3) The value of H o for the reaction below is -336kJ. Calculate the heat (kJ) released when 23.0g of HCl is formed. CH 4 (g) + 3 Cl 2 (g) CHCl 3 (l) + 3HCl(g) A) -336kJ B) -2.57 x 10 3 kJ C) –177kJ D) –211kJ E) -70.7kJ 4) For which one of the following equations is H o rxn equal to H o f for the product? A) Xe (g) + 2 F 2 (g) XeF 4 (g) B) CH 4 (g) + 2 Cl 2 (g) CH 2 Cl 2 (l) + 2HCl (g) C) C (diamond) + O 2 (g) CO 2 (g) D) N 2 (g) + O 3 (g) N 2 O 3 (g) E) 2CO (g) + O 2 (g) 2CO 2 (g) 5) Given the data in the table below, H o rxn for the reaction is ________ kJ. 2 Ag 2 S (s) + O 2 (g) 2 Ag 2 O (s) + 2S (s) Substance H o f (kJ/mol) Ag 2 O (s) -31.0 Ag 2 S (s) -32.6 O 2 (g) 0 S (s) 0 A) -3.2 B) -1.6 C) +3.2 D) +1.6 E) –63.6 6) A 5.00-g sample of liquid water at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the water is ________ o C. The specific heat capacity of liquid water is 4.18 J/g-K. A) 95.2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

KEY3A - A Chemistry 1211K Test III MULTIPLE CHOICE (3...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online