acid, bases and salts

Question 1

metal + acid —> ???
give examples

Answer 1

salt + H2

Zn + H2SO4 —> ZnSO4 + H2
Zn + 2HCl —> ZnCl2 + H2

Question 2

metal carbonate + acid —> ???
give examples

Answer 2

salt + CO2 + H2O

Na2CO3 + 2HCl —> 2NaCl + CO2 + H2O
NaHCO3 + HCl —> NaCl + CO2 + H2O

Question 3

metal oxide + acid —> ???
give examples

Answer 3

salt + H2O

CuO + H2SO4 —> CuSO4 + H2O
CuO + 2HCl —> CuCl2 + H2O

Question 4

base + metal —> ???
give example

Answer 4

salt + H2

2NaOH + Zn —> Na2ZnO2 + H2

Question 5

base + non metal —> ???
give examples

Answer 5

salt + H2O

CO2 + Ca(OH)2 —> CaCO3 + H2O

Question 6

common salt

Answer 6

NaCl
sodium chloride

NaOH + HCl —> NaCl + H2O

Question 7

caustic soda

Answer 7

NaOH
sodium hydroxide

2NaCl + 2H2O —> 2NaOH + Cl2 + H2

Question 8

bleaching powder

Answer 8

CaOCl2
calcium oxychloride

Ca(OH)2 + Cl2 —> CaOCl2 + H2O

Question 9

baking soda

Answer 9

NaHCO3
sodium hydrogen carbonate

NaCl + NH3 + CO2 + H2O —> NaHCO3 + NH4Cl

Question 10

washing soda

Answer 10

Na2CO3.10H2O
sodium carbonate decahydrate

Na2CO3 + 10 H2O —> Na2CO3.10H2O

Question 11

plaster of paris

Answer 11

CaSO4.1/2 H2O
calcium sulphate hemi hydrate

CaSO4.2H2O –373K–> CaSO4.1/2 H2O + 1 1/2 H2O