chap 4 sum and key words
35 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of an indicator substance in a titration analysis?

  • To increase the solubility of reactants
  • To decrease the efficiency of the reaction
  • To speed up the reaction rate
  • To permit visual detection of the end point (correct)

In a neutralization reaction, what is produced when an acid reacts with a base?

  • Salt and water (correct)
  • Precipitate
  • Reducing agent
  • Oxidizing agent

What does the percent yield measure in a reaction?

  • The oxidation number change
  • The efficiency of the reaction (correct)
  • The solubility of the products
  • The theoretical yield

What type of reaction produces one or more insoluble products?

<p>Precipitation reaction (B)</p> Signup and view all the answers

What is the purpose of a titrant in titration analysis?

<p>To measure the volume of reactant solution required (C)</p> Signup and view all the answers

What does the term 'stoichiometry' refer to in chemistry?

<p>The relationship between reactants and products in a chemical reaction (A)</p> Signup and view all the answers

'Spectator ions' in a reaction:

<p>Are required to maintain charge neutrality but do not participate in the reaction (B)</p> Signup and view all the answers

'Strong acid' refers to an acid that:

<p>Dissolves completely to yield hydronium ions when in water (A)</p> Signup and view all the answers

What is the definition of an analyte in chemistry?

<p>The chemical species of interest (D)</p> Signup and view all the answers

Which type of reaction involves the transfer of a hydrogen ion between reactant species?

<p>Acid-base reaction (D)</p> Signup and view all the answers

What is the purpose of a buret in chemistry?

<p>To deliver precise liquid volumes in titrations (A)</p> Signup and view all the answers

Which type of equation shows whether each reactant loses or gains electrons in a reaction?

<p>Half-reaction (B)</p> Signup and view all the answers

In chemistry, what does the term 'excess reactant' refer to?

<p>Reactant present in greater amount than required (A)</p> Signup and view all the answers

What defines the equivalence point in a titration analysis?

<p>Volume providing stoichiometric amount of titrant (D)</p> Signup and view all the answers

Which method involves the separation of an analyte from a sample followed by mass measurements?

<p>Gravimetric analysis (D)</p> Signup and view all the answers

'Complete ionic equation' explicitly represents what in a chemical reaction?

<p>All dissolved ionic reactants and products (B)</p> Signup and view all the answers

'Combustion analysis' is primarily used for determining what aspect of a compound?

<p>'Elemental composition' via gaseous combustion products (C)</p> Signup and view all the answers

What does a 'balanced equation' in chemistry ensure?

<p>Equal number of atoms for each element (D)</p> Signup and view all the answers

What is a characteristic of balanced chemical equations?

<p>They have equal numbers of atoms for each element in reactants and products (D)</p> Signup and view all the answers

Which type of chemical equation is more succinct in representing reactions involving ionic reactants or products?

<p>Complete ionic equations (A)</p> Signup and view all the answers

In redox reactions, what type of change occurs for one or more reactant elements?

<p>Change in oxidation number (B)</p> Signup and view all the answers

Which method is used to simplify writing balanced equations for redox reactions occurring in aqueous solutions?

<p>Half-reaction method (A)</p> Signup and view all the answers

What do precipitation reactions involve?

<p>Formation of insoluble products (D)</p> Signup and view all the answers

In which type of reaction are hydrogen ions transferred between reactant species?

<p>Acid-base reaction (D)</p> Signup and view all the answers

What is the purpose of using a systematic approach like the half-reaction method in balancing redox reactions?

<p>To simplify the balancing process (D)</p> Signup and view all the answers

'Net ionic equations' are more succinct representations of chemical reactions because they focus on:

<p>'Spectator ions' (D)</p> Signup and view all the answers

What is the term for the amount of product actually generated by a chemical reaction?

<p>Actual yield (A)</p> Signup and view all the answers

In chemistry, what does the term 'percent yield' measure?

<p>The actual yield of product compared to the theoretical yield (C)</p> Signup and view all the answers

What factor determines the amount of product generated in a chemical reaction when reactants are used in less-than-stoichiometric quantities?

<p>The limiting reactant (C)</p> Signup and view all the answers

Which method is used to determine the elemental composition of a compound by collecting and weighing the gaseous products of its combustion?

<p>Gravimetric analysis (B)</p> Signup and view all the answers

What is used to calculate the concentration of analyte in a sample during a titration analysis?

<p>Volume of titrant solution used (A)</p> Signup and view all the answers

What does the term 'stoichiometry' primarily serve as the basis for in quantitative chemical analysis methods?

<p>Determining reactant masses and molar amounts (A)</p> Signup and view all the answers

What does the 'theoretical yield' in a chemical reaction refer to?

<p>The maximum amount of product that could be obtained based on stoichiometry (C)</p> Signup and view all the answers

Which term is used to express the extent to which a reaction generates the theoretical amount of product?

<p>'Percent yield' (A)</p> Signup and view all the answers

'Gravimetric analysis' in chemistry involves what process to determine analyte concentration?

<p>'Collecting and weighing' (A)</p> Signup and view all the answers
Use Quizgecko on...
Browser
Browser