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Determining pH

How to determine the pH of a substance. #Science #Chemistry

18 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the change in H3O+ concentration from a pH of 5 to a pH of 3?

  1. 10
  2. 100
  3. 1000
  4. 10,000
Question 2 Multiple Choice (Single Answer)

T/F: Every time pH decreases by 1, the H3O+ concentration increases by a factor of 10.

  1. TRUE
  2. FALSE
Question 3 Multiple Choice (Single Answer)

Would hand soap be considered as acidic or basic with a pH of 10?

  1. ACIDIC
  2. BASIC
Question 4 Multiple Choice (Single Answer)

Which of the following household items has a pH of 10?

  1. apple juice
  2. drain cleaner
  3. black coffee
  4. hand soap
Question 5 Multiple Choice (Single Answer)

If a phenol red indicator turns a bright pink color, what is known about that solution's pH?

  1. it has a neutral pH
  2. it has an acidic pH
  3. it has a basic pH
  4. phenol red only shows a red color
Question 6 Multiple Choice (Single Answer)

If the indicator bromthymol blue turns yellow, what is the pH of that solution?

  1. pH is below 6.0
  2. pH is above 7.6
  3. pH is between 6.0 and 7.6
  4. the solution is neutral
Question 7 Multiple Choice (Single Answer)

Which of the following will not give you a specific pH number, but will give a pH range?

  1. universal pH paper
  2. acid-base indicators
  3. electronic pH meters
  4. water
Question 8 Multiple Choice (Single Answer)

What common substance has a neutral pH of 7?

  1. apple juice
  2. water
  3. baking soda
  4. soap
Question 9 Multiple Choice (Single Answer)

Would lemon juice, with a pH of 2, be more or less acidic than milk, which has a pH of 6.5?

  1. more acidic
  2. less acidic
Question 10 Multiple Choice (Single Answer)

Basic solutions can have a pH value of ______ to _____.

  1. 1 to 7
  2. 7
  3. 8 to 14
  4. zero
Question 11 Multiple Choice (Single Answer)

A solution with a pH value of 7 is considered to be _______.

  1. basic
  2. acidic
  3. neutral
  4. healthy
Question 12 Multiple Choice (Single Answer)

A solution with a pH value of less than 7 would be considered _______.

  1. basic
  2. acidic
  3. neutral
  4. poisonous
Question 13 Multiple Choice (Single Answer)

The numbers on a pH scale relate to a concentration of which type of ions in a solution?

  1. H2O
  2. H2O-
  3. H3O+
  4. H3O-
Question 14 Multiple Choice (Single Answer)

The numbers on a pH scale range from _____ to _____.

  1. 0 to 7
  2. -7 to 7
  3. -14 to 14
  4. 0 to 14
Question 15 Multiple Choice (Single Answer)

What does pH stand for?

  1. properties of Hydrogen
  2. properties of Health
  3. potential of Hydrogen
  4. potential of Helium
Question 16 Multiple Choice (Single Answer)

How do scientists measure how acidic or basic a solution is?

  1. by determining its H2O
  2. by determining its OH-
  3. by determining its bH
  4. by determining its pH
Question 17 Multiple Choice (Single Answer)

When dissolved in water, what increases the number of positively charged Hydronium (H3O+) ions?

  1. a solution
  2. an acid
  3. a base
  4. a mixture
Question 18 Multiple Choice (Single Answer)

When dissolved in water, what increases the number of negatively charged Hydroxide (OH-) ions?

  1. a solution
  2. an acid
  3. a base
  4. a mixture
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