16) What is true about pH? a. acids are a pH less than 7 b. bases are a pH greater than 7 c. water is a pH of 7 d. pH is a scale of how basic or acidic a solution is e. all of the above are true
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- Which of these statements is correct with respect to pH? The pH of a solution remains constant with increasing basicity. O A. The pH of a solution decreases gradually with increasing basicity. O B. OC. C. The pH of a solution increases gradually with increasing basicity.A pH of 3 is a. basic b. neutral c. acidicd. a bufferThe following has a pH greater than 7 (>7): Oa. Acid Ob. Base O c. Buffer O d. Salt Oe. None of the Above
- If the addition of an acid or a base to a solution does not change its pH (or changed minimally), then that solution is referred to as a a. acid b. base c. buffer d. neutral solutionWhich of the following best describes a solution with a pH of 9? A. it would have 100 times more free hydrogen ions than a solution with a pH of 7 B. it would have half as many hydrogen ions as a solution with a pH of 7 C. it would be classified as a base D. it would be classified as an acidWhich of the following statements is true? a. Acids and bases cannot mix together. b. Acids and bases will neutralize each other. c. Acids, but not bases, can change the pH of a solution. d. Acids donate hydroxide ions (OH–); bases donate hydrogen ions (H+).
- The following is another name for an alkaline: O a. Acid O b. Base O c. Buffer O d. Salt Oe. None of the AboveWhich of the following substances will dissolve in water A.nonpolar B.polar C.hydrophobic D.hydrophilic E.ionicWhich of the following describes a buffer? A. The measure of the amount of hydrogen ions in a liquid B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH C. A substance that releases hydrogen ions in water D. A substance that accepts hydrogen ions in water
- Select the statements that are TRUE regarding Water. SELECT ALL THAT APPLY A. Water is amphoteric B. Water can be a base C. Water is partially charged D. Water can be an acidSubstances those are partially dissolved in water are commonly known as اخترأحد الخيارات a. hydrophilic / hydrophobic b. false statement c. hydrophilic d. hydrophobic e. all given choices are incorrectAmelia tests several substances in her house to determine their pH values and records the results. Substance pH Lemon juice 2.3 Tap water 6.7 Bleach 12.3 Soapy water 11.7 Can of tomatoes 4.5 Dishwasher detergent 10.9 What do the basic substances have in common? A They are all used in cooking. B They are all used in cleaning products. C They are all clear or transparent. D They are all sour tasting when eaten.
