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Arrhenius Acid and Base Concepts

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Questions and Answers

What is a key characteristic of Arrhenius acids?

Turns blue litmus paper red (correct)

Tastes soapy

Reacts with bases

Has a pH value greater than 7

Why does a compound lacking hydrogen ions not classify as an Arrhenius acid?

It feels slippery to the touch

It lacks the charged hydrogen ions to bond with water (correct)

It turns litmus paper blue

It reacts with acids

Which compound would NOT be classified as an Arrhenius base?

Lithium carbonate (Li2CO3) (correct)

Copper (II) hydroxide (Cu(OH)2)

Magnesium hydroxide (Mg(OH)2)

Sodium hydroxide (NaOH)

What is a common property shared by Arrhenius bases?

Feel slippery to the touch (D) Signup and view all the answers

Why do some compounds not qualify as Arrhenius bases even though they might be basic?

They lack the hydroxide ion in their composition (B) Signup and view all the answers

In what circumstance do Arrhenius acids and bases typically react to form more neutral solutions?

During a neutralization reaction (A) Signup and view all the answers

What is a limitation of the Arrhenius model in classifying substances as acids or bases?

The necessity of water being present (D) Signup and view all the answers

Why is a compound dissolved in liquid ammonia not considered an Arrhenius base?

It does not produce hydroxide ions (D) Signup and view all the answers

Which ion is formed when an Arrhenius acid is dissolved in water?

Hydronium ion (C) Signup and view all the answers

What effect does the dissociation of an Arrhenius acid have on the pH of a solution?

Decreases pH (C) Signup and view all the answers

Which compound below is NOT listed as a common Arrhenius acid?

H2O2 (B) Signup and view all the answers

What is the key requirement for a compound to be classified as an Arrhenius acid?

Form hydronium ions in water (C) Signup and view all the answers

Which ion is formed when an Arrhenius base dissociates in water?

Hydroxide ion (D) Signup and view all the answers

Why is it a misconception that any compound containing hydrogen will act as an Arrhenius acid?

Not all hydrogen compounds form hydronium ions (C) Signup and view all the answers

In terms of chemical formula, what is common among nearly all Arrhenius acids?

Hydrogen as the first element (D) Signup and view all the answers