Question

Составьте молекулярные уравнения реакций,с помощью которых можно осуществить следующие превращения: CoOHCl --->CoCl2--->Co(OH)2--->CoCl2--->Co(NO3)2--->CoOHNO3

Answer 1

1) СоOHCl + HCl = CoCl2 + H2O

2) CoCl2 + 2NaOH = 2NaCl + Co(OH)2 
3) Co(OH)2 + 2HCl = CoCl2 + 2H2O 
4) CoCl2 + 2AgNO3 = 2AgCl + Co(NO3)2 
5) Co(NO3)2 + NaOH = CoOHNO3 +NaNO3

Answer 2

Molecular Equations for the Given Transformations:

To perform the given transformations, we need to write the molecular equations for each step. Let's break down the transformations and write the equations step by step:

1. CoOHCl → CoCl2: - The reaction involves the replacement of the hydroxyl group (OH) with a chloride ion (Cl). - The balanced molecular equation for this reaction is: CoOHCl + HCl → CoCl2 + H2O [[1]].

2. CoCl2 → Co(OH)2: - The reaction involves the replacement of two chloride ions (Cl) with two hydroxyl groups (OH). - The balanced molecular equation for this reaction is: CoCl2 + 2NaOH → Co(OH)2 + 2NaCl [[2]].

3. Co(OH)2 → CoCl2: - The reaction involves the replacement of two hydroxyl groups (OH) with two chloride ions (Cl). - The balanced molecular equation for this reaction is: Co(OH)2 + 2HCl → CoCl2 + 2H2O [[3]].

4. CoCl2 → Co(NO3)2: - The reaction involves the replacement of two chloride ions (Cl) with two nitrate ions (NO3). - The balanced molecular equation for this reaction is: CoCl2 + 2AgNO3 → Co(NO3)2 + 2AgCl [[4]].

5. Co(NO3)2 → CoOHNO3: - The reaction involves the replacement of two nitrate ions (NO3) with one hydroxyl group (OH). - The balanced molecular equation for this reaction is: Co(NO3)2 + 2NaOH → CoOHNO3 + 2NaNO3 [[5]].

Summary:

Here are the molecular equations for each step of the given transformations:

1. CoOHCl + HCl → CoCl2 + H2O 2. CoCl2 + 2NaOH → Co(OH)2 + 2NaCl 3. Co(OH)2 + 2HCl → CoCl2 + 2H2O 4. CoCl2 + 2AgNO3 → Co(NO3)2 + 2AgCl 5. Co(NO3)2 + 2NaOH → CoOHNO3 + 2NaNO3

Please note that these equations represent the molecular changes occurring in the reactions. The actual reaction conditions, such as temperature, pressure, and catalysts, may vary depending on the specific experimental setup.