Question

ПОООООМООООООГИИИИИТЕЕЕ!! какие реакции протекают до конца в растворе? a) Na₂CO₃+Ca(NO₃)₂= b)NaNO₃+CuSO₄= c)Na₂S+CuCl₂= e)NaNO₃+CuSO₄= d)K₂SO₄+Cu(NO₃)₂=

Answer 1

А) Na2CO3+Ca(NO3)2=CaCO3⇩+2NaNO3 ; -до конца. b) NaNO₃+CuSO₄=нет реакции. c) Na₂S+CuCl₂=CuS⇩+2NaCl ; - идет до конца. d) K₂SO₄+Cu(NO₃)₂= нет реакции.

Answer 2

Chemical Reactions in Aqueous Solutions

When certain substances are mixed in water, they can undergo chemical reactions. Let's explore the reactions for the given combinations:

a) Na₂CO₃ + Ca(NO₃)₂: - When sodium carbonate (Na₂CO₃) and calcium nitrate (Ca(NO₃)₂) are mixed in water, they will undergo a double displacement reaction, also known as a metathesis reaction. The products of this reaction will be sodium nitrate (NaNO₃) and calcium carbonate (CaCO₃) [[1]].

b) NaNO₃ + CuSO₄: - When sodium nitrate (NaNO₃) and copper(II) sulfate (CuSO₄) are mixed in water, they will also undergo a double displacement reaction. The products of this reaction will be sodium sulfate (Na₂SO₄) and copper(II) nitrate (Cu(NO₃)₂) [[2]].

c) Na₂S + CuCl₂: - When sodium sulfide (Na₂S) and copper(II) chloride (CuCl₂) are mixed in water, they will undergo a double displacement reaction. The products of this reaction will be sodium chloride (NaCl) and copper(II) sulfide (CuS) [[3]].

d) K₂SO₄ + Cu(NO₃)₂: - When potassium sulfate (K₂SO₄) and copper(II) nitrate (Cu(NO₃)₂) are mixed in water, they will also undergo a double displacement reaction. The products of this reaction will be potassium nitrate (KNO₃) and copper(II) sulfate (CuSO₄) [[4]].

In all these reactions, the reactants are dissolved in water, and the resulting products are also in the form of aqueous solutions.