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14 April, 06:34

Basic substances have a gritty texture.

TRUE

FALSE

A substance is added to pure water and the concentration of aqueous H + ions increases. What kind of substance has been added to the water?

an acid

a base

water

either an acid or a base

+1
Answers (1)
  1. 14 April, 07:51
    0
    1. Answer;

    False

    Explanation;

    Bases have some of the following properties;

    They have a bitter taste They have a slimy, or soapy feel on fingers Most bases react with acids and precipitate salts. Strong bases may react violently with acids. Bases turn red litmus paper blue

    2. Answer;

    An acid

    Explanation; When acids are dissolved in water, the concentration of the acid decreases and it becomes dilute. It dissociates in water to give H + ions or hydrogen ions. All acidic solutions contain more hydrogen ions than hydroxide ions, therefore when added to water it increases the concentration of H + ions in water, as water is a neutral substance whose concentration of H + ions is equal to OH-.
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