Common Acids & Bases
In which common substance do we find ethanoic acid?
Vinegar
What gas is produced when acids and bases react with metals.
Hydrogen
What is the meaning of pH
What is the name and chemical formula for baking soda?
sodium hydrogen carbonate, NaHCO3
Show the dissociation of water
H2O --> OH- + H+
What base is present in Milk of Magnesia
Magnesium hydroxide
What is the name of the reaction between an acid and a base?
Neutralization
What is the concentration of H+ ions in water?
1 x 10-7
Give two uses for calcium oxychloride
Bleaching cotton/linen, paper, disinfectant, sterilization, oxidizing agent, chloroform
Show the dissociation of KOH
KOH --> K+ + OH-
What color would phenolphthalein indicator be if bitten by an ant?
colorless
What are the products of this reaction:
Na2CO3 + HCl -->
NaCl + H2O + CO2
What is the pH of a 0.0001 M solution of HCl?
pH = 4
What is the name and chemical formula for washing soda?
sodium carbonate decahydrate, Na2CO3 . 10H2O
Show the dissociation of H2SO4 and balance
H2SO4 + 2H2O --> 2H3O+ + SO4-2
Sodium hydrogen carbonate would turn litmus paper _____________.
Blue
What are the products of the reaction between a base and a non-metal oxide?
Salt + water
What is the pH of a 5 x 10-4 solution of H2SO4?
pH = 3
Show the process of making Plaster of Paris
CaSO4 . 2H2O -->(100ยบ) CaSO4 . 1/2H2O + 3/2H2O
Show the dissociation of benzoic acid
C6H5COOH + H2O --><-- C6H5COO- + H3O+
Give 2 characteristics of acids and 2 characteristics of bases.
Acids: tase sour, corrosive, produce H+ ions, pH below 7
Bases: taste bitter, feel slippery, make OH- ions, pH above 7
Name the acid and base that made this salt:
K2SO4
What is the nature of this salt?
KOH + H2SO4, neutral
What is the pH of a 0.001 M solution of KOH?
pH = 11
Show Solvey's Process -
500 points for making baking soda
1000 points for making washing soda
CaCO3 -->(heat) CaO + CO2
CO2 + NaCl + NH3 + H2O --> NaHCO3 + NH4Cl
NaHCO3 --> (heat) Na2CO3 + H2O + CO2
Na2CO3 + 10H2O --> Na2CO3.10H2O
Show the dissociation of copper(II) hydroxide and balance
Cu(OH)2 --><-- Cu+2 + 2OH-