Questions and Answers
Which substance is an electrolyte?
A substance is classified as an electrolyte because...
its aqueous solution conducts an electric current
When an Arrhenius acid dissolves in water, the only positive ion in the solution is:
When the pH of a solution is changed from 4 to 3, the hydronium ion concentration of the solution:
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Which pH change represents a hundredfold increase in the concentration of H3O+?
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What is the pH of a 0.001 M KOH solution?
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If a solution has a hydronium ion concentration of 1 x 10^-9 M, the solution is...
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What is pH?
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What is pOH?
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Which species can act as an acid?
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A compound that can act as an acid or a base is referred to as...
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Water can be an amphoteric substance because it can...
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What is the hydrolysis equation?
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What is the neutralization equation?
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When additional solid NaCl dissolves in a solution of NaCl in water, the pH of the solution...
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What is the equation for the formation of a neutral salt from strong acid and strong base?
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What is the equation for the formation of an acid salt from strong acid and weak base?
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What is the equation for the formation of a base salt from weak acid and strong base?
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Study Notes
Electrolytes and pH Concepts
- Electrolytes are substances that conduct electric current in aqueous solutions.
- HCl is identified as an electrolyte among the options.
- An Arrhenius acid releases H+ ions when dissolved in water, resulting in a solution with only H+ ions.
- A change in pH from 4 to 3 signifies a tenfold increase in the concentration of hydronium ions (H3O+).
pH and pOH
- A hundredfold increase in H3O+ concentration corresponds to a pH change from 3 to 1.
- The pH of a 0.001 M KOH solution is determined to be 11, indicating it is basic.
- A hydronium ion concentration of 1 x 10^-9 M suggests the solution is acidic, with a corresponding pH of 9.
- pH is a measure of H+ concentration, while pOH measures OH- concentration in a solution.
Acid-Base Behavior
- The ammonium ion (NH4+) can act as an acid.
- Substances that can function as either acids or bases are referred to as amphoteric substances, with water being a prime example as it can donate or accept protons.
Chemical Reactions
- Hydrolysis involves the reaction of a salt with water to produce an acid and a base.
- Neutralization occurs when an acid and a base react to form a salt and water.
- The dissolution of additional NaCl in a NaCl solution does not alter the pH, indicating that it remains neutral.
Types of Salts
- Strong acid with strong base (SA + SB) results in a neutral salt.
- Strong acid with weak base (SA + WB) forms an acid salt.
- Weak acid with strong base (WA + SB) produces a basic salt.
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Description
Test your knowledge on acids, bases, and electrolytes with these flashcards. This quiz includes questions about Arrhenius acids, electrolytes, and pH levels. Ideal for students preparing for chemistry exams.
