1) 2Na + S = Na2S
2Na + 2HCl =2 NaCl + H2
2Na+ 2H2O = 2NaOH + H2
2Na + H2 =2 NaH
2) Известняк - CaCO3
Гипс CaSO4*2H2O
CaCO3 * MgCO3 доломит
Ca3(PO4)2 фосфорит
3) Al2O3 +6 HCl = 2AlCl3 +3 H2O
Al2O3 + 2NaOH +3H2O = 2Na[Al(OH)4]
Al(OH)3 +3 Hcl = AlCl3 + 3H2O
Al(OH)3 + NaOH = Na[Al(OH)4]
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1) 2Na + S = Na2S
2Na + 2HCl =2 NaCl + H2
2Na+ 2H2O = 2NaOH + H2
2Na + H2 =2 NaH
2) Известняк - CaCO3
Гипс CaSO4*2H2O
CaCO3 * MgCO3 доломит
Ca3(PO4)2 фосфорит
3) Al2O3 +6 HCl = 2AlCl3 +3 H2O
Al2O3 + 2NaOH +3H2O = 2Na[Al(OH)4]
Al(OH)3 +3 Hcl = AlCl3 + 3H2O
Al(OH)3 + NaOH = Na[Al(OH)4]
2na + 2 hci = 2 naci + h2
2ha + h20 = 2najh + h2
2na + h2 = 2 nah
2)caco3
caco3
ca3
3)ai203 + 6 hci = 2aici3
ai203 + 2naoh + 3h20 = 2na(ai(oh)4)
ai(oh)3 + hcl = aici3 + 3h20
ai(oh)3 + naon = na(ai(oh)4)
это всё