chap 4 sum and key words

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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?

Precipitation reaction Signup and view all the answers

What is the purpose of a titrant in titration analysis?

To measure the volume of reactant solution required Signup and view all the answers

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

The relationship between reactants and products in a chemical reaction Signup and view all the answers

'Spectator ions' in a reaction:

Are required to maintain charge neutrality but do not participate in the reaction Signup and view all the answers

'Strong acid' refers to an acid that:

Dissolves completely to yield hydronium ions when in water Signup and view all the answers

What is the definition of an analyte in chemistry?

The chemical species of interest Signup and view all the answers

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

Acid-base reaction Signup and view all the answers

What is the purpose of a buret in chemistry?

To deliver precise liquid volumes in titrations Signup and view all the answers

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

Half-reaction Signup and view all the answers

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

Reactant present in greater amount than required Signup and view all the answers

What defines the equivalence point in a titration analysis?

Volume providing stoichiometric amount of titrant Signup and view all the answers

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

Gravimetric analysis Signup and view all the answers

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

All dissolved ionic reactants and products Signup and view all the answers

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

'Elemental composition' via gaseous combustion products Signup and view all the answers

What does a 'balanced equation' in chemistry ensure?

Equal number of atoms for each element Signup and view all the answers

What is a characteristic of balanced chemical equations?

They have equal numbers of atoms for each element in reactants and products Signup and view all the answers

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

Complete ionic equations Signup and view all the answers

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

Change in oxidation number Signup and view all the answers

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

Half-reaction method Signup and view all the answers

What do precipitation reactions involve?

Formation of insoluble products Signup and view all the answers

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

Acid-base reaction Signup and view all the answers

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

To simplify the balancing process Signup and view all the answers

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

'Spectator ions' Signup and view all the answers

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

Actual yield Signup and view all the answers

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

The actual yield of product compared to the theoretical yield 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?

The limiting reactant 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?

Gravimetric analysis Signup and view all the answers

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

Volume of titrant solution used Signup and view all the answers

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

Determining reactant masses and molar amounts Signup and view all the answers

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

The maximum amount of product that could be obtained based on stoichiometry Signup and view all the answers

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

'Percent yield' Signup and view all the answers

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

'Collecting and weighing' Signup and view all the answers