Modern Biology Study Guide (Section 2-3) matt Water And Solution – Flashcards
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Solvent
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Substances in which the solution dissolves
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Aquueous solution
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Solution in which water is a solvant
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Hydroxide Ion
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is a negatively charged particle of hydroxide. An example of Hydroxide Ion (hO-)
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Hydroxide Ion
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is a negatively charged particle of hydroxide. An example of Hydroxide Ion (hO-)
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Base
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Compound that increases the number of hydroxide ion when desolved in water
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Buffer
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solution containing a moderatly weak acid and its conjugate base. solutions are used as ameans of keeping pH at a nearly constant value in a wide variety of chemical applications.
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The concentration of a solution is the measurement of the amount of what?
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Solute dissolved in a fixed amount of the solution
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When water dissociates, its form
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H+ ions and OH- ions
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An acid is a solution with more
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Hydronium ions than hydroxide ions
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An example of a base is
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Ammonia
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A solution wth ph above 7 is
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Alkaline
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What property of water allows it to stick to the sides of a vertical glass tube?
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Condencation
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What states of matter can solutions be composed of?
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Condencation
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What states of matter can solutions be composed of?
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Liquid solids or gases
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How much sugar is there in 100 ml of a 10 percent aqeous sugar solution?
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10 ml
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What are the relative numbers of H3O+ and OH ions in an acidic, an alkaline, and a neutral solution?
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Acid: (H3O+) 600; (OH-) 400
Neutral: (H3O+) 500; (OH-) 500
Alkaline: (H3O+) 400; (OH-) 600
Neutral: (H3O+) 500; (OH-) 500
Alkaline: (H3O+) 400; (OH-) 600
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How many timesmore Hydroxide ions are there in a solution with a pH of 9 than in a solution with a pH of 3?
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6 times more Hydroxide ions
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How are buffers important to the functioning of living systems?
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They are chemicals that neutralize the effects of adding small amounts
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Ifa a solution has a pH of 7.5 what would its new pH be if the concentration of H3O+ ions in the solution were increased by 100.
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If the pH of 7.5 increased by 100 times th pH would be 750
