DAT Gen Chem Word Scramble
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Question | Answer |
How is pressure related to volume? | Inversely related P = 1/V "Boyles Law" |
How is Temperature related to volume? | Directly proportional V = T "Charle's Law" |
How is moles of gas related to volume? | Directly proportional V = n "Avogadro's Law" |
What is the Ideal Gas Law? | PV=nRT |
Which phase changes are "endothermic"? | Solid - Liquid - Gas = Fusion, Vaporization, Sublimation |
Which phase changes are "exothermic"? | Gas - Liquid - Solid = Crystallization, Condensation, Deposition |
How do you measure the heat change? | Q=mcΔT |
How do you find out the rate of effusion? Which gas escapes faster and by how much? | Rate1/Rate2 =√Molar mass2/ Molar mass1 Ex) Rate H2/Rate O2 = √32/2 |
Molar Mass = ? | Grams / moles |
Density = ? | Mass/Volume, but given the grams - find the moles, then find out how much volume by the moles at STP. Ex) 2 moles = 44.4L |
What is the mole ratio of this equation? N2(g) + 3 H2(g) -> 2NH3(g) | 1:3:2 Ratio |
N2(g) + 3 H2(g) -> 2NH3(g) With 10 moles N2 and 20 moles H2 What is the Limiting Reagent and Theoretical Yield? | Limiting Reagent = H2 Theoretical Yield = 13.33 mol NH3 |
Molarity =? | Molarity = mol solute / L solution |
Molality =? | Molality = mol solute/ kg solvent |
Mole Fraction =? | Mole Fraction = mol solute/ total moles |
CaCO3(s) + 2HCl(aq) -> CaCl2 + H2O + CO2 Using 400g CaCO2(s) What volume of CO2(g) is produced at STP? | 400g CaCO3 -> 4 mol CaCO3(s) -> 4 mol CO2(g) x 22.4L = 89.6 L CO2 |
CaCO3(s) + 2HCl(aq) -> CaCl2 + H2O + CO2 Using 400g CaCO2(s) What volume of 6M HCl is needed to completely react with 400g CaCO2(s)? | 400g CaCO3 -> 4 mol CaCO3(s) -> 8 mol HCl M=mol/V V=mol/M V= 8 mol HCl/ 6mol/L = 1.33 L HCl |
What are all soluble? | Group I Metals, NH4+, NO3-, ClO4-, C2H3O2- "most" Ag+, Pb2+, Hg2+ |
Freezing Point Depression =? | ∆Tf = -iKfm |
Boiling Point Elevation =? | ∆Tb = iKbm |
Vapor Pressure =? | Pa = XaPtotal = (mole fraction)(total pure) |
117g NaCl in 500ml H2O, Kf= 1.86C/M What's the molality of the solution? What's the total freezing point? | 2 mol NaCl/ 0.5 kg H20 = 4M (van hoff i =2) ∆Tf = -iKfm ∆Tf = -(2)(1.86)(4) = -15 degrees C |
1 m NaCl 1.5 m CH3OH 0.8 m AlCl3 1.2 m CsNO3 Which has highest/lowest boiling point? Which has highest/lowest freezing point? | (i)(m)= NaCl =2m CH3OH =1.5m (Highest FP, Lowest BP) AlCl3 =3.2m (Highest BP and Lowest FP)(Lowest Vapor Pressure) CsNO3 =2.4m |
What is Osmotic Pressure=? | π=iMRT |
What is the hybridization and bond angle of a molecule with 2 electron domains? | SP, 180˚ |
What is the hybridization and bond angle of a molecule with 3 electron domains? | SP2, 120˚ |
What is the hybridization and bond angle of a molecule with 4 electron domains? | SP3, 109.5˚ |
What is the hybridization and bond angle of a molecule with 5 electron domains? | SP3D, 90˚, 120˚ |
What is the hybridization and bond angle of a molecule with 6 electron domains? | SP3D2, 90˚ |
What is the molecular geometry of a molecule with 2 electron domains? | Linear |
What is the molecular geometry of a molecule with 3 electron domains with 0 non-bonding e- pairs? With 1 non-bonding e- pair? | 0 - Trigonal Planar 1 pair - Bent |
What is the molecular geometry of a molecule with 4 electron domains with 0 non-bonding e- pairs? With 1 non-bonding e- pair? With 2 non-bonding e- pairs? | 0 -Tetrahedral 1 pair - Trigonal Pyramidal 2 pairs - Bent |
What is the molecular geometry of a molecule with 5 electron domains with 0 non-bonding e- pairs? With 1 non-bonding e- pair? With 2 non-bonding e- pairs? With 3- non bonding pairs | 0 - Trigonal Bypyramidal 1 pair - Seesaw 2 pairs - T Shaped 3 pairs - Linear |
What is the molecular geometry of a molecule with 6 electron domains with 0 non-bonding e- pairs? With 1 non-bonding e- pair? With 2 non-bonding e- pairs? | 0 - Octahedral 1 pair - Square Pyramidal 2 pairs - Square Planar |
What is the 1st law of Thermodynamics? | Conservation of energy (can't be created or destroyed) ∆U=Q-W |
What is the 2nd law of Thermodynamics? | For a spontaneous process, the entropy (∆S) of the universe increases. (Time makes things more random or disordered) ∆H=(H final-H initial) |
What is the standard heat of a reaction? | ∆H˚rxn= (sum of ∆H˚f of products)-(sum of ∆H˚f of reactants) |
If 10g oh NaOH is dissolved in 500g of water, what is the molality of the solution? | 1/2 or 0.5 |
If enough water is added to 11g CaCl2 to make 100 mL of solution, what is the molarity of the solution? | 1M |
How many mL of water must be added to 65mL of a 5.5M solution of NaOH in order to prepare a 1.2M NaOH solution? | 235mL added |
Electromotive force (EMF)=? | EMF= E˚cathode- E˚ anode EMF (galvanic) = + EMF (electrolytic) = - |
What is the 3rd law of Thermodynamics? | A perfect crystal has no entropy @ 0Kelvin |
Isobaric? | ∆P=0 (Same Pressure) |
Isochoric? | ∆V=0 (Same Volume) so work=0, ∆E=Q |
Isothermal? | ∆T=0 (Same Temperature) so ∆E=0, Q=-W |
Adiabatic? | "No heat change" Q=0 (Insulated) ∆E=W |
Which has a larger ionic radius? K+ or Cl- and why? | Cl- they both are isoelectric to each other wanting to be like Ar, but the more protons a nucleus has the smaller the ionic radius it will be. |
Under which conditions will a reaction always be in thermodynamic equilibrium? | When ∆G=0, ∆H/T∆S=1 |
Why will the reaction NaOH + H2SO4 go to completion? | Because it is a neutralization reaction, where a strong acid reacts with a strong base to form salt and a water in a double displacement reaction |
What are salts of nitrous acids called? | Nitrites |
What does Ksp have to do with solubility? | The larger the Ksp the more able to dissolve the molecule is. |
The oxide of a non-metal is? | An acid anhydride. Basic anhydrides are those metal oxides that react with water ex) K2O + H2O -> 2KOH |
The element with the greatest electron affinity will be the better (oxidizing or reducing) agent? | Oxidizing - Oxidizing agents are reduced, meaning they gain electrons. |
Created by:
sstauffer7
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