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The graph below shows the pH of different household items. Use the graph to answer the questions. 10.1 What is the pH of the household item that is the weakest acid? Give the name of this item.

Chemistry

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2 parts
10.1

pH = 5, Yoghurt\text{pH = 5, Yoghurt}

10.3
4

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Here are the solutions to the questions based on the provided graph:

Part 10.1· 2 steps

  1. Identify the weakest acid.

    A weaker acid has a pH value closer to 7. From the graph, we look at items with pH less than 7.

    • Vinegar has a pH of approximately 3.
    • Yoghurt has a pH of approximately 5.
    • Acid rain has a pH of approximately 4. Among these, Yoghurt has the highest pH (5), making it the weakest acid.

  2. State the pH and name of the item.

    The pH of the weakest acid is 5, and the item is Yoghurt.

    pH = 5, Yoghurt\boxed{\text{pH = 5, Yoghurt}}

Part 10.2

Acid rain is formed when pollutants like sulfur dioxide (SO2\text{SO}_2) and nitrogen oxides (NOx\text{NO}_{\text{x}}), primarily from burning fossil fuels, are released into the atmosphere. These gases react with water, oxygen, and other chemicals to form sulfuric acid (H2SO4\text{H}_2\text{SO}_4) and nitric acid (HNO3\text{HNO}_3). These acids then fall to the Earth as rain, snow, fog, or dry particles.

Part 10.34

  1. Determine the pH values from the graph.

    • The pH of Vinegar is 3.
    • The pH of Distilled water is 7.

  2. Calculate the difference in pH.

    Difference in pH=pH of Distilled water−pH of Vinegar\text{Difference in pH} = \text{pH of Distilled water} - \text{pH of Vinegar} Difference in pH=7−3\text{Difference in pH} = 7 - 3 Difference in pH=4\text{Difference in pH} = 4

    The difference in pH between vinegar and distilled water is 4.

    4\boxed{4}
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