Rank these substances in increaing acididty (least to most) 1.0M HCOOH 1.0M NaHC
ID: 1048897 • Letter: R
Question
Rank these substances in increaing acididty (least to most)
1.0M HCOOH
1.0M NaHCO3
1.0 M H2SO4
Which of these pairs represent the products of this dissociation in water?
Mg(OH)2=______+______
a. MgOH, H2
b.OH-, MgOH+
c. Mg+2, 2OH-
d. Mg+, 2OH-
e. OH2-, Mg+
Which of these equations best repsesents the reaciton that takes place in the stomach when the antacid calsium carbonate is taken?
a. NaHCO3+H2O+CO
b. CaCO3=H2O+CO
c. CO32-+2H3O+=3H2O+CO2
d. Ca2++2H3O+=3H2O+CaO
e. CaCO3+H3O+=Ca(OH)2+CO2
Which os these gases combine with water to form acid rain?
SO2 , NO2 H2, N2, Cl2
Explanation / Answer
Rank these substances in increaing acididty (least to most)
Answer: 1.0M NaHCO3 < 1.0M HCOOH < 1.0 M H2SO4
NaHCO3 is a base, formic acid is a weak acid, sulfuric acid is a strong acid.
Which of these pairs represent the products of this dissociation in water?
Answer: Mg(OH)2=___Mg+2___+___2OH-___
it dissociates into two seperate ions cation & anion
Which of these equations best repsesents the reaciton that takes place in the stomach when the antacid calsium carbonate is taken?
most of the carbonates reacts with acid and forms carbon dioxide and water
Which os these gases combine with water to form acid rain?
Answer: SO2 , NO2 &Cl2
SO2 + H2O --> H2SO3
3 NO2 + H2O = 2 HNO3 + NO
Cl2 +H2O --> HClO +HCl
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