a.form hydroxide ions. c.conduct electricity.
b.have a negative charge. d.turn blue.
2.The label on a bottle indicates that the substance inside has a pH of 13. This tells you that the substance is
a.neutral. c.mildly basic.
b.strongly acidic. d.strongly basic.
3.Which substance, when added to milk, causes the milk to curdle?
a.lemon juice c.baking soda
b.yogurt d.sugar
4.Which acid is a strong electrolyte?
a.sulfuric acid c.formic acid
b.acetic acid d.citric acid
5.Which base is a weak electrolyte?
a.sodium hydroxide c.calcium hydroxide
b.potassium hydroxide d.ammonia
6.Which acid-base reaction will yield an acidic solution?
a.HCl and Ca(OH)2 c.H2SO4 and KOH
b.HNO3 and NH3 d.HCOOH and NaOH
7.Bleach should never be mixed with ammonia or with
a.acid. c.water.
b.detergent. d.soap.
1 (c)
2 (d)
3 (a)
4 (a)
5 (c)
6 (a)
7 (a)
1-c.conduct electricity.
2-d.strongly basic.
3-b.yogurt
4-a.sulfuric acidc.
5-d.ammonia
6-b.HNO3 and NH3
7-a.acid
1. c) conduct electricity
because of the dissociation of the acid (HA) into H+ and A-
2. d) strongly basic
if it was neutral, the ph would have been 7. if it was acidic, the ph would have been less than 7. If it was midly basic, the ph would have been greater than 7 but less than about 10. Because the ph is near 14, it is very strongly basic.
3. a) lemon juice
because unlike the other substances, lemon juice is acidic.
Milk already is slightly acidic therefore adding an acid to it lower its ph value
4. a) sulfuric acid
it ionizes completely (100%) therefore it conducts electricty very well as opposed to all the other acids cited.
5) d) ammonia
it doesn't ionize nor does it dissociate into ions
6) b) HNO3 and NH3
option (a) and (b) feature a strong acid and a strong base which means their solution is about neutral. Option (d) is a weak acid and a strong base which means the solution is basic. Finally, (c) is a strong acid and a weak base which means the solution is acidic
7) a) acid
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