Question

помогите пожалуйста срочно!!

Answer 1

а)

1) 4Al + 3O2 = 2Al2O3

2) Al2O3 + 6HCl = 2AlCl3 + 3H2O

Al2O3 + 6H[+] + 6Cl[-] = 2Al[3+] + 6Cl[-] + 3H2O

Al2O3 + 6H[+] = 2Al[3+] + 3H2O

3) AlCl3 + 3NaOH = 3NaCl + Al(OH)3↓

Al[3+] + 3Cl[-] + 3Na[+] + 3OH[-] = 3Na[+] + 3Cl[-] + Al(OH)3↓

Al[3+] + 3OH = Al(OH)3↓

4) 2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O

2Al(OH)3 + 6H[+] + 3SO4[2-] = 2Al[3+] + 3SO4[2-] + 6H2O

2Al(OH)3 + 6H[+] = 2Al[3+] + 6H2O

5) Al2(SO4)3 + 3BaCl2 = 2AlCl3 + 3BaSO4 ↓

2Al[3+] + 3SO4[2-] + 3Ba[2+] + 6Cl[-] = 2Al[3+] + 6Cl[-] + 3BaSO4↓

3Ba[2+] + 3SO4[2-] = 3BaSO4 ↓

б)

1) 2C + O2 = 2CO

2) 2CO + O2 = 2CO2

3) CO2 + 2NaOH = Na2CO3 + H2O

CO2 + 2Na[+] + 2OH[-] = 2Na[+] + CO3[2-] + H2O

CO2 + 2OH[-] = CO3[2-] + H2O

4) Na2CO3 + 2HCl = 2NaCl + CO2 + H2O

2Na[+] + CO3[2-] + 2H[+] + 2Cl[-] = 2Na[+] + 2Cl[-] + CO2 + H2O

CO3[2-] + 2H[+] = CO2 + H2O

5) NaCl + AgNO3 = NaNO3 + AgCl↓

Na[+] + Cl[-] + Ag[+] + NO3[-] = Na[+] + NO3[-] + AgCl ↓

Ag[+] + Cl[-] = AgCl ↓