Acids and alkalis

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Sana

Cards (27)

  • An alkali is a substance that donates hydroxide ions (OH-) in a chemical reaction.
  • Neutral substances have pH values equal to 7
  • Methyl orange indicator changes its color from yellow to red in acidic solutions and red to orange in basic solutions.
  • Alkaline solutions have pH values greater than 7
  • Turnerol, another acid-base indicator, shows yellow color in acidic solutions and violet in basic solutions.
  • Litmus is an indicator obtained from a lichen. In acidic solutions, litmus turns red, while in basic solutions it turns blue.
  • Acidic solutions have pH values less than 7
  • Acids have a pH value less than 7, while alkalis have a pH value greater than 7.
  • Acids can react with bases to form salts and water.
  • A base is any substance which can neutralise an acid to form salt and water
  • Acidic solutions have a low pH value, while basic or alkaline solutions have high pH values.
  • The pH scale measures the concentration of H+ ions in solution, with values ranging from 0-14.
  • Phenolphthalein indicator turns pink or red in the presence of an alkaline solution, but remains colourless when exposed to acids.
  • The pH scale measures the acidity or alkalinity of a solution on a logarithmic scale from 0-14, with 7 being neutral.
  • Universal Indicator is used as it can be used with any type of solution.
  • The pH scale measures the concentration of H+ ions in solution, with lower numbers indicating higher concentrations of H+ ions and more acidic conditions.
  • The pH scale measures the concentration of H+ ions in solution on a logarithmic scale ranging from 0 to 14.
  • The pH scale measures how acidic or alkaline a solution is on a logarithmic scale ranging from 0-14.
  • The pH scale measures the concentration of H+ ions in a solution on a logarithmic scale ranging from 0 to 14.
  • Acidic solutions have pH values less than 7.
  • The pH scale measures the hydrogen ion concentration ([H+]) in a solution on a logarithmic scale ranging from 0 to 14.
  • A neutral solution has a pH value of 7, which means it contains an equal number of H+ and OH- ions.
  • A neutral solution has a pH value of 7, which means it contains an equal number of H+ and OH- ions.
  • A neutral solution has a pH value of 7.
  • A neutral solution has a pH value of 7.
  • Bases are also known as alkalies or alkali metals
  • A pH value of 7 indicates neutrality, with equal concentrations of H+ and OH- ions.