Chemistry Lab Exam Flashcards
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Questions and Answers

What is the product of the reaction Cu + AgNO3?

Ag + Cu(NO3)2 (s)

What is the product of the reaction Pb + Cu(NO3)2 (aq)?

Cu + PbNO3 (s)

What is the product of the reaction Zn + Pb(NO3)2 (aq)?

Pb + ZnNO3 (s)

What are the products of the reaction Zn + H2SO4 (aq)?

<p>H2 (g) + ZnSO4</p> Signup and view all the answers

Arrange the following metals from most active to least active: Pb, Mg, Zn.

<p>Mg, Zn, Pb</p> Signup and view all the answers

Arrange Cu, Ag, and Zn from most active to least active.

<p>Zn, Cu, Ag</p> Signup and view all the answers

Arrange Mg, H, and Ag from most active to least active.

<p>Mg, H, Ag</p> Signup and view all the answers

Arrange all five metals (Mg, Zn, Pb, Cu, Ag) from most active to least active.

<p>Mg, Zn, Pb, Cu, Ag</p> Signup and view all the answers

Why can't hydrogen be listed amongst all of the other metals when discussing the activity series?

<p>Because we do not know how hydrogen would react with Pb.</p> Signup and view all the answers

How could we determine the exact position of hydrogen in the activity series?

<p>Perform another test of Pb and H2SO4 to establish which element had greater and lesser activity.</p> Signup and view all the answers

Would silver react with dilute sulfuric acid?

<p>False</p> Signup and view all the answers

Would magnesium react with dilute sulfuric acid?

<p>True</p> Signup and view all the answers

What is the product of the reaction KHP + NaOH?

<p>NaKC8H4O4 + H2O</p> Signup and view all the answers

What is the product of the reaction HCl + NaOH?

<p>NaCl + H2O</p> Signup and view all the answers

How can you determine reactivity in a reaction?

<p>If it is a single replacement, the most active element will be combined with another element in the product.</p> Signup and view all the answers

NaCl + KNO3 results in a reaction.

<p>False</p> Signup and view all the answers

What is the product of the reaction NaCl + AgNO3?

<p>NaNO3 + AgCl</p> Signup and view all the answers

What is the product of the reaction NaCl + 2HCl?

<p>2NaCl + H2O + CO2</p> Signup and view all the answers

What is the product of the reaction NaOH + HCl?

<p>NaCl + H2O (l)</p> Signup and view all the answers

What is the product of BarCl2 + H2SO4?

<p>Ba(SO4) + 2HCl</p> Signup and view all the answers

What is the product of the reaction 2NH4OH + H2SO4?

<p>(NH4)2SO4 + H2O (l)</p> Signup and view all the answers

CuSO4 + Zn(NO3)2 results in a reaction.

<p>False</p> Signup and view all the answers

What is the product of the reaction Na2CO3 + CaCl2?

<p>Ca(CO3) + 2NaCl</p> Signup and view all the answers

CuSO4 + NH4Cl results in a reaction.

<p>False</p> Signup and view all the answers

What is the product of the reaction NaOH + HNO3?

<p>Na(NO3) + H2O (g)</p> Signup and view all the answers

What is the product of the reaction FeCl3 + NH4OH?

<p>Fe(OH)3 + 3(NH4)Cl</p> Signup and view all the answers

What is the product of the reaction Na2SO3 + 2HCl?

<p>H2O + 2NaCl + SO2</p> Signup and view all the answers

What three classes of substances are formed in double replacement reactions?

<p>Slightly ionizable product</p> Signup and view all the answers

What does the term tetrahedral refer to?

Signup and view all the answers

What does the term trigonal pyramid refer to?

Signup and view all the answers

What does the term bent refer to?

Signup and view all the answers

What does the term linear refer to?

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What is bond polarity?

<p>Arrow points toward the more electronegative atom (F is the most electronegative).</p> Signup and view all the answers

What is Charles's Law?

<p>V0/T0 = Vf/Tf</p> Signup and view all the answers

What is the pressure of dry air formula?

<p>P(DA) = P(atm) - P(H2O)</p> Signup and view all the answers

What is the volume of dry air formula?

<p>Vda = (Vexp)(Pda)/Patm</p> Signup and view all the answers

What is titration?

<p>Process of measuring the volume of one reagent to react with a measured volume of another reagent.</p> Signup and view all the answers

How are moles calculated?

<p>grams of solute / molar mass of solute</p> Signup and view all the answers

What is molarity?

<p>moles of solute / 1.00 L of solution</p> Signup and view all the answers

What does KHP stand for?

<p>KHC8H4O4</p> Signup and view all the answers

What is the molarity of base formula?

<p>(Volume used)(Molarity)</p> Signup and view all the answers

Study Notes

Chemical Reactions

  • Cu + AgNO3 produces Ag + Cu(NO3)2 (s), indicating copper displaces silver.
  • Pb + Cu(NO3)2 (aq) results in Cu + PbNO3 (s), showing lead displacing copper.
  • Zn + Pb(NO3)2 (aq) leads to Pb + ZnNO3 (s), highlighting zinc's displacement of lead.
  • Zn + H2SO4 (aq) yields H2 (g) + ZnSO4, illustrating zinc's reactivity with sulfuric acid.
  • KHP + NaOH produces NaKC8H4O4 + H2O, a salt formation from an acid-base reaction.
  • HCl + NaOH leads to NaCl + H2O, showing neutralization reaction producing table salt.

Activity Series of Metals

  • Order of activity from most to least: Mg, Zn, Pb.
  • Most reactive metals identified as Zn, Cu, Ag in descending order.
  • Metals ranked include Mg, H, Ag in terms of reactivity, with magnesium being the most active.
  • Overall reactivity order for five metals is Mg, Zn, Pb, Cu, Ag.
  • Hydrogen's position remains uncertain as its interaction with lead is untested.

Reactivity Questions

  • Silver does not react with dilute sulfuric acid since its activity is lower than hydrogen.
  • Magnesium does react with dilute sulfuric acid, confirming its higher activity compared to hydrogen.
  • Reactivity determination involves the most active element in a single replacement reaction driving the product formation.

Chemical Equations

  • NaCl + KNO3 leads to No Reaction, indicating inert conditions.
  • NaCl + AgNO3 results in NaNO3 + AgCl, showcasing a precipitation reaction.
  • NaOH + HCl confirms neutralization yielding NaCl + H2O (l).
  • BaCl2 + H2SO4 leads to Ba(SO4) + 2HCl, indicating formation of barium sulfate.
  • 2NH4OH + H2SO4 generates (NH4)2SO4 + H2O (l), demonstrating sulfate salt formation.

Double Replacement Reactions

  • Formation of products leading to precipitate, gas, or slightly ionizable products characterizes double replacement reactions.
  • Notable no reaction is observed in CuSO4 + Zn(NO3)2 and CuSO4 + NH4Cl.

Additional Concepts

  • Bond Polarity: Arrow in diagrams points towards the more electronegative atom, with F being the most electronegative.
  • Charles Law formula: Vo/To = Vf/Tf, describing the relationship between temperature and volume of gas.
  • Pressure of dry air can be calculated using the equation: P(DA) = P(atm) - P(H2O).
  • Volume of dry air: Vda = (Vexp)(Pda)/Patm helps in understanding gas behavior in experiments.
  • Titration is defined as the measured volume of one solution reacting with another.
  • Calculating moles: grams of solute / molar mass of solute aids in concentration determinations.
  • Molarity is represented as moles of solute / 1.00 L of solution, crucial for solution concentration.
  • KHP refers to potassium hydrogen phthalate, represented as KHC8H4O4.
  • Molarity of base calculation: determined by (Volume used)(Molarity), instrumental in titration analysis.

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Prepare for your chemistry lab exam with these flashcards that cover key reactions and activity series of metals. Each flashcard presents a reaction equation or an order of metals based on their reactivity. Test your knowledge and improve your understanding of essential chemistry concepts.

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