Question

Problem Set -811 Name: Date _C2H5OH (I) + O2(g) →_ CO, +_ _H20 (6) _CH () + 01 (8) > CO + HẠO (8) 3. Balance the following reactions and study the pattern of the reactions: Na (s) + __H20 (1) ► NaOH(aq) + ___ Ha (8) __Ca (s) + HCl(aq) → _ _CaCl (aq) + ____ Hz (8) _Al(s) + _ _HCl(aq) → ___AICI, (aq) + _Hz (E) _Ca (s) + __HCI (aq) → __CaCl2 (aq) + Hz (g) __Fe(s) + __ HCl(aq) → ____ Fech (aq) + __H2 (8) 4. Balance the following acid base reactions and study the pattern of the reactions: _ NaOH (aq) + __HClO, (aq) → __ Nacio. (aq) + __ H20 (1) NaOH (aq) + ___ H2SO4 (aq) → ___NaSO4 (aq) + ___ H20 (1) Ca(OH)2 (aq) + _ HCl (aq) → _ _CaCl2 (aq) + _H20 (1) Ca(OH)2 (aq) + - H2SO4 (aq) → _Caso (s) + __ _ H20 (1) Al(OH)2 (aq) + __HCl (aq) → __ _AICI, (aq) + H20 (1) Al(OH), (aq) + _H2SO4 (aq) → __ Al2(SO4)3 (s) + ___ H20 (1)

Answer 1

Balance equation follows the principle of law of conservation of mass. The number of atoms in the elements of reactant side must be equal to the number of atoms in the elements on product side.

The balanced equations are written in the images given

0 1 C His 0.140) +_30492-> 3 Co + 3 1₂0 tato 2 2 C ₂ 1 8 (g) + 5 Olg) - 3 CO₂ ③ 3 Na +240 - 3 NaOH I 4 Ca + 2HCl - Callet Ca + 2HCl - Call + H₂

③ - Fe(s) te HCl lag) - Fech + H2 ЗА САсаба А.С., 43,
Reaction 1 is Combustion reaction

Reaction 2 is Combustion reaction

Reaction 3 is single replacement reaction

Reaction 4,5 is single replacement reaction

Reaction 6 is single replacement reaction

Reaction 7 is single replacement reaction.

Thus, all the reactions in Q3. of given sheet is single replacement reaction.