Question

Закончите уравнение химических реакций. Запишите их в ионном виде. А)H2SO4+BaCl2= В)NaOH+H3PO4= C)Ba(OH)2+Na2CO3= D)Na2S+HCl=

Answer 1

H₂SO₄ + BaCl₂ ⇒ BaSO₄ + HCl
H₂SO₄+BaCl = BaSO₄ + 2HCl
2H + SO4 + Ba + Cl = BaSO4 + 2H + 2Cl
Ba + SO4 = BaSO4

NaOH + H₃PO₄ ⇒ Na₃PO₄ + H₂O
3NaOH + H₃PO₄ = Na₃PO₄ +  3H₂O
3Na + 3OH + 3H + PO4 = 3Na + PO4 + 3H2O
3OH + 3H = 3H2O

Ba(OH)₂ + Na₂CO₃ ⇒ BaCO₃ + NaOH
Ba(OH)₂ + Na₂CO₃ =  BaCO₃ + 2NaOH
Ba + 2OH + 2Na + CO3 = BaCO3 + 2Na + 2OH
Ba + CO₃ = BaCO₃

Na₂S +HCl ⇒ NaCl + H₂S
Na₂S +2HCl = 2NaCl + H₂S
2Na + S + 2H + 2Cl = 2Na + 2Cl + H2S
S + 2H = H2S

Answer 2

A) H2SO4 + BaCl2 =

The balanced chemical equation for the reaction between sulfuric acid (H2SO4) and barium chloride (BaCl2) is:

H2SO4 + BaCl2 → BaSO4 + 2HCl.

In ionic form, the equation can be represented as:

2H+ + SO4^2- + Ba^2+ + 2Cl- → BaSO4 + 2H+ + 2Cl-.

B) NaOH + H3PO4 =

The balanced chemical equation for the reaction between sodium hydroxide (NaOH) and phosphoric acid (H3PO4) is:

3NaOH + H3PO4 → Na3PO4 + 3H2O.

In ionic form, the equation can be represented as:

3Na+ + 3OH- + H+ + H2PO4- → Na3PO4 + 3H2O.

C) Ba(OH)2 + Na2CO3 =

The balanced chemical equation for the reaction between barium hydroxide (Ba(OH)2) and sodium carbonate (Na2CO3) is:

Ba(OH)2 + Na2CO3 → BaCO3 + 2NaOH.

In ionic form, the equation can be represented as:

Ba^2+ + 2OH- + 2Na+ + CO3^2- → BaCO3 + 2Na+ + 2OH-.

D) Na2S + HCl =

The balanced chemical equation for the reaction between sodium sulfide (Na2S) and hydrochloric acid (HCl) is:

Na2S + 2HCl → 2NaCl + H2S.

In ionic form, the equation can be represented as:

2Na+ + S^2- + 2H+ + 2Cl- → 2Na+ + 2Cl- + H2S.

Please note that the above equations are balanced and represent the stoichiometry of the reactions.