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Questions and Answers
What did Svante Arrhenius propose as the definition of a base?
What did Svante Arrhenius propose as the definition of a base?
- A substance that dissociates in aqueous solution to form hydroxide ions (correct)
- A metal hydroxide such as NaOH or Ca(OH)2
- A substance that reacts with acids to form water
- A substance that changes the color of pH indicators
What characteristic properties were described for aqueous hydroxide solutions?
What characteristic properties were described for aqueous hydroxide solutions?
- Neutral pH, transparent appearance, and no effect on litmus paper
- Rough texture, sour taste, and no effect on pH indicators
- Sweet taste, acidic pH, and colorless appearance
- Slippery to the touch, bitter taste, and pH indicator color change (correct)
What is the effect of bases on the pH of water?
What is the effect of bases on the pH of water?
- Decreases the pH of water
- Increases the pH of water (correct)
- Causes water to become acidic
- Does not affect the pH of water
What type of reaction occurs between bases and acids?
What type of reaction occurs between bases and acids?
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Who originally proposed the concept that bases are substances that react with acids?
Who originally proposed the concept that bases are substances that react with acids?
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