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1. Oxford Dictionary

   alkali

   • IPA[ˈalkəlʌɪ]

   英式

   • n.
     a compound with particular chemical properties including turning litmus blue and neutralizing or effervescing with acids; typically, a caustic or corrosive substance of this kind such as lime or soda

   • noun: alkali, plural noun: alkalis

2. • 釋義

   n.

   名詞

   • 1. a compound with particular chemical properties including turning litmus blue and neutralizing or effervescing with acids; typically, a caustic or corrosive substance of this kind such as lime or soda flint is not subject to chemical weathering except by strong alkalis the reaction is followed by measuring the concentration of alkali at various times