Make an equation for the electrolytic dissociation of AlI3 by indicating in the answer the sum

| September 11, 2021 | education

1. Make an equation for the electrolytic dissociation of AlI3 by indicating in the answer the sum of the coefficients of the equation 2. How many atoms are included in the anion during electrolytic dissociation of sodium carbonate 3. Complete the equation by indicating in the answer the value of the molecular weight of the gaseous or insoluble reaction product ZnSO4 + BaCl2- 4. Calculate the sum of the coefficients reduced ionic equation K2S + H2SO4- 5. Make the hydrolysis equation for Mg (NO1) and give in the answer the value of the molecular weight of the salt formed during hydrolysis

1.AlI3 = Al (3+) + 3I (-), the sum of the coefficients: 1 + 1 + 3 = 5

2. Na2CO3 = 2Na (+) + CO3 (2-), the anion (negatively charged ion) – CO3 (2-) consists of 4 atoms.

3. ZnSO4 + BaCl2 = ZnCl2 + BaSO4, barium sulfate precipitates (see solubility table). Mr (BaSO4) = 137+ 32 + 16 * 4 = 233.

4. K2S + H2SO4 = K2SO4 + H2S (molecular weight);

2K (+) + S (2-) + 2H (+) + SO4 (2-) = 2K (+) + SO4 (2-) + H2S (total ionic concentration)

S (2-) + 2H (+) = H2S (abbreviated ionic y-tion), the sum of the coefficients: 1 + 2 + 1 = 4.

5. Mg (NO3) 2 = Mg (2+) + 2NO3 (-). The weak component of the salt, i.e. Mg (2+), lends itself to hydrolysis.

Mg (NO3) 2+ Н2О = MgНNO3 + НNO3, Mr (MgНNO3) = 24 + 1 + 14 + 16 * 3 = 87.



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