Chemistry: Alkali and Basic Solutions
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Questions and Answers

What is the etymological origin of the word 'alkali'?

  • Derived from Latin alcali, meaning basic salt
  • Derived from Greek alkales, meaning water-soluble base
  • Derived from Sanskrit alkala, meaning caustic substance
  • Derived from Arabic al qalīy, meaning calcined ashes (correct)

    • What is the pH of a solution of a soluble base?

  • Greater than 7.0 (correct)
  • Depends on the specific base
  • Exactly 7.0
  • Less than 7.0

    • What is the composition of potash, an alkaline substance mentioned in the text?

  • Mostly calcium hydroxide
  • Mostly magnesium sulfate
  • Mostly sodium chloride
  • Mostly potassium carbonate (correct)

    • What was produced by heating potash with calcium hydroxide?

    <p>Caustic potash (potassium hydroxide) (D)</p> Signup and view all the answers

    Why is the term 'alkaline' commonly used as a synonym for basic in English?

    <p>'Alkalis' were the first bases known to obey the Arrhenius definition of a base (A)</p> Signup and view all the answers

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