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Final Exams Review Packet, Exams of Chemistry

University of Western States (UWS)Chemistry

Remote Final Exams Review Session with Unsolved Questions.

Typology: Exams

2021/2022

Uploaded on 02/24/2022

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General Chemistry I: Final Exams Review Packet
Remote Final Exams Review Session
NOTICE: This Final Exams Review packet consists of 47 questions to support with concepts listed on the
CHEM 111 study guide. The questions in this review guide students through important concepts learned
throughout the course. This review and questions listed were created by a student employee: Learning
Center tutor and CHEM 111 PAL Leader. The questions were acquired through various resources and/or
created by the student.
Instructions: Follow along with the session facilitator as they review questions in this packet. To ask
questions, raise your hand, or send a message in the chat box. A tutor will be available via chat to
support with questions or concerns during the event.
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Download Final Exams Review Packet and more Exams Chemistry in PDF only on Docsity!

General Chemistry I: Final Exams Review Packet

Remote Final Exams Review Session

NOTICE: CHEM 111 study guide. The questions in this review guide students through important concepts learned This Final Exams Review packet consists of 47 questions to support with concepts listed on the throughout the course. This review and questions listed were created by a student employee: LearningCenter tutor and CHEM 111 PAL Leader. The questions were acquired through various resources and/or created by the student. Instructions: questions, raise your hand, or send a message in the chat box. A tutor will be available via chat to Follow along with the session facilitator as they review questions in this packet. To ask support with questions or concerns during the event.

  1. A student is calculating the density of acetic acid. After several experiments he obtains the following values: 0.88 g/ml, 0.81 g/ml, 0.79 g/ml, 0.83 g/ml. The real value of acetic acid is 1.05 g/ml. Are the calculations precise? Are they accurate?
  2. Indicate the number of significant figures. 700000
    2.80 x 10^3
  3. Provide the answer to the following calculations using the proper number of significant figures. a) 23.7 x 3. b) 43.678 x 64. c) 32.567 + 135.0 + 1.
  4. Carry out the following conversions: a) 65.2 mg = _______________g = ______________pg

b) 95.0 ยฐC into F

  1. Write the complete nuclear equation: 84210 Po^ -------->^24 He^ +^ _____________^ Type of reaction: 78190 Pt +^ -1^0 e^ -------->^ ______________^ Type of reaction: (^11650) Sn --------> ______________ + 11649 Sn Type of reaction:
  1. Draw the Born-Haber cycle for CsF. Calculate the lattice energy. H Hfs (^) , Cs (s)= 76.5 kj/mol= -553.5 kj/mol Hie, Cs (g) = 375.7 kj/mol H EA = -328.2 kj/molbe, F 2 (g) = 158.8 kj/mol
  1. Label each sets of quantum numbers as valid or invalid. (4,2,3,+1/2) (2,0,0,-1/2) (3,3,-2,-1/2) (3,1,-1,+1/2)
  2. Provide complete electronic configuration for the following elements. a) Ca b) Cl- c) Ni2+ Orbital diagram for valence electrons:

d) Ta (#73)

  1. Choose the species that is isoelectronic with Ar a) Kr b) O2- c) S2- d) K+ e) Cl-
  1. Provide noble gas notation electron configuration for the following elements:

a) Ag b) Znเฌถเฌพ

  1. What is the neutral element with the following electron configuration? a) 1s2 2s2 2p6 3s2 3p b) 1s2 2s2 2p6 3s2 3p6 3d10 3s2 4d10 4f14 4p6 5s2 5p6 6s2 5d
  2. Order the following elements in increasing order of electronegativity: AL, P, Ca, Ba
  3. Order the following elements in increasing order of ionization energy: B, F, Rb, K
  4. Order the following elements in increasing order of atomic radius: O, Cs, Ca, Be
  5. Order the following elements in increasing order of electron affinity: F, Cs, Li, O
  1. Count all sigma and pi bonds.
  1. Draw the MO diagram for N 2 2-
  2. Calculate the bond order.
  3. Indicate if the molecule is diamagnetic or paramagnetic
  1. Indicate if the following molecules are polar or non-polar: CH 4 CH 3 OH CO 2 SO 2
  2. Name the following compounds: CaF NaNO Pb(ClO 2 ) 2 S 2 F 10 Co 2 O 3 Na 2 CrO 4 NiCr 2 O 7 AlPO 4 AgCN HI (aq) H2CO3(aq) Aluminum Carbonate Iron (3) nitrate Magnesium Hydroxide
  1. Indicate the hybridization of the following atoms:
  1. If 23 grams of iron (II) chloride reacts with 41 grams of sodium phosphate, how much sodium chloride can be formed?

How much excess reagent remains when this reaction is complete?

If 15.3 grams of sodium chloride are formed in the reaction, what is the percent yield?

  1. Indicate if the compound is soluble or insoluble in water Ba(OH) 2 MgSO 4 FeCO 3 ZnCl 2 NaOH Zn(OH) 2 RbNO 3 Zn 3 (PO 4 ) 2 Cs 2 SO 4
  2. State elements reduced, oxidized, reducing agent, oxidizing agent, half reaction, and the final balanced equation for the following skeleton equation: Sn2+^ + IO 3 -^ ๏ƒ  Sn4+^ + I-
  1. Predict if the following reactions will occur: a) 2H+(aq) + Pt(s) -> H2(g) + Pt2+(aq) b) Ca2+(aq) + Mg(s) -> Ca(s) + Mg2+(aq)
  2. Predict if the following reactions will give precipitates:

๐‘ƒ๐‘(๐‘๐‘‚เฌท)เฌถ + 2๐พ๐ผ โ†’ ๐ด๐‘”๐‘๐‘‚เฌท + ๐‘๐‘Ž๐ถ๐‘™ โ†’

  1. Dry ice is carbon dioxide in the solid state. 1.28 grams of dry ice is placed in 5.00 L chamber that is maintained at 35.1ยฐ C. What is the pressure in the chamber after the gas sublime?
  1. 1.60 g of naphthalene (Cpure benzene is 5.5 oC, and the freezing point of the mixture is 2.8 10 H 8 ) is dissolved in 20.0 g of benzene. The freezing point of oC. What is the molal freezing point depression constant, Kf of benzene?
  2. Calculate the molality of 15.00 M HCl with a density of 1.0745 g/cm^3