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- 1. Multiple ChoiceWhich of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.Acids; pH less than 7Acids; pH greater than 7Bases; pH greater than 7Bases; pH less than 7 - 2. Multiple ChoiceThe esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that isneutralbasic
acidic or basic.acidic - 3. Multiple ChoiceIf an acid is combined with a base of equal strength, the result will most likely bea neutral solution.a stronger acid.impossible to tell without testing the pH.a stronger base
- 4. Multiple ChoiceHolly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beakeris a base.has a neutral pH.is an acid.does not have a pH. - 5. Multiple ChoiceWhich of the following is a base?orange juicewatervinegardishwashing detergent
- 6. Multiple ChoiceLitmus paper can be used to determine the _______ of a substance.relative volumetemperaturerelative pHchemical formula
- 7. Multiple ChoiceWhich of the following statements is correct?Blue litmus paper turns red when placed in a base.Red litmus paper turns blue when placed in a base.Blue litmus paper stays blue when placed in an acid.Red litmus paper stays red when placed in a base.
- 8. Multiple ChoiceCarrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink.
What type of chemical does Carrie have?Carrie has a neutral chemical.Carrie has an acidic chemical.Carrie has a basic chemical.The type of chemical Carrie has cannot be determined. - 9. Multiple ChoiceWhich of the following is an acid?shampoobaking sodaorange juicewater
- 10. Multiple ChoiceThe pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?3975
- 11. Multiple ChoiceHuman blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?strongly acidicslightly acidicstrongly basicslightly basic
- 12. Multiple ChoiceWhen using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.texturecolorlengthmass
- 13. Multiple ChoiceWhat would be considered the weakest base?8147.811.6
- 14. Multiple ChoiceMany cleaning solutions are bases. Which of the following is a property of most bases?feels slipperywhite colorcan only be liquidtastes sour
- 15. Multiple ChoicePure water has a pH of 7. Pure water _______.is a baseis a neutral substancecould be either an acid or a baseis an acid
- 16. Multiple ChoiceWhat is one chemical that is a Bronsted-Lowry base, but not an Arrhenius base?NH3NaOHHClMg(OH)2
- 17. Multiple ChoiceWhat is the salt produced when H2SO4 neutralizes with LiOHSO4LiLi2SO4H2OHOH
- 18. Multiple ChoiceWhat is the pH of a solution with a [H+] = 0.0032M.2.51.511.512.5
- 19. Multiple ChoiceWhat type of reaction is this:
HCl(aq) + Mg(OH)2(aq) --> MgCl2(aq) + H2O(l)precipitationneutralizationredoxcombustion - 20. Multiple ChoiceWhat is the formula for chlorous acidHClO2HClO3ClO2HCl
- 21. Multiple ChoiceWhat type of reaction is this:
CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)combustionneutralizationprecipitationredox - 22. Multiple ChoiceBASE + ACID ----> SALT +?wateroxygenhydrogen ionhydroxide ion
- 23. Multiple ChoiceWhat is the concentration of an aqueous solution containing 2.3 moles of NaCl in 0.95 liters of solution?2.2M0.5M3.3M2.4M
- 24. Multiple ChoiceWhat is the final concentration if I dilute 200 mL of 9.0 M Kool-Aid to a final volume of 750 mL?33.75M2.4M16666.7M4.2M
- 25. Multiple ChoiceWhat is the pH of a solution of potassium hydroxide (KOH) with a hydroxide concentration of 2.88x10-3M?11.512.52.51.5
- 26. Multiple Choice
What is this piece of apparatus called
Pipette
Burette
Janette
Cuvette
- 27. Multiple Choice
What is the reading on this burette?
24.0cm3
25.8cm3
24.2cm3
23.9cm3
- 28. Multiple Choice
Calculate the average volume of acid needed for this neutralisation
15.2cm3
15.0cm3
35.5cm3
30.1cm3
- 29. Multiple Choice
30cm3 of NaOH is neutralised by 12.3cm3 of 0.2mol/l HCl. What is the concentration of the NaOH.
82 mol/l
0.82 mol/l
0.49 mol/l
0.082 mol/l
- 30. Multiple ChoiceI have 50cm3 of 0.1M HCl. How many moles of NaOH will I need to neutralise it?50.50.050.005
- 31. Multiple Choice
30cm3 of NaOH is neutralised by 12.3cm3 of 0.2mol/l HCl. What is the concentration of the NaOH.
82 mol/l
0.82 mol/l
0.49 mol/l
0.082 mol/l
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