a) tất cả\(NaOH+HCl->NaCl+H_2O\)\(Mg\left(OH\right)_2+2HCl->MgCl_2+2H_2O\)\(Ba\left(OH\right)_2+H_2O->BaCl_2+H_22O\)b) Mg(OH)2\(Mg\left(OH\right)_2-^{t^o}>MgO+H_2O\)c) NaOH , Ba(OH)2\(2NaOH+CO_2->Na_2CO_3+H_2O\)\(Ba\left(OH\right)_2+CO_2->BaCO_3+H_2O\)d) NaOH,Ba(OH)2 làm quỳ tím hóa xanh Câu trả lời: a) tất cả\(NaOH+HCl->NaCl+H_2O\)\(Mg\left(OH\right)_2+2HCl->MgCl_2+2H_2O\)\(Ba\left(OH\right)_2+H_2O->BaCl_2+H_22O\)b) Mg(OH)2\(Mg\left(OH\right)_2-^{t^o}>MgO+H_2O\)c) NaOH , Ba(OH)2\(2NaOH+CO_2->Na_2CO_3+H_2O\)\(Ba\left(OH\right)_2+CO_2->BaCO_3+H_2O\)d) NaOH,Ba(OH)2 làm quỳ tím hóa xanh