Question

Допишите левые части уравнений реакций по известным правым частям уравнений реакций: a) ........+...........=Cu(OH)2+2KNO3 b).............+........=Ca(NO3)2+2H2O c)............+..........=FeCl3+3H2O d)..........+..........=Fe(OH)3+3NaCL e)...........+.........=CaCl+H2O+CO2 f).........+..........=CaCl2+2H2O+2NH3

Answer 1

А) CuNo3+KOh2
б)Ca(OH)2+HNO3
c)Fe(OH)3+HCl
d)FeCl3+NaOH

Answer 2

Cu(NO3)2 + 2KOH  = Cu(OH)2 + 2KNO3

Ca(OH)2 +2 HNO3 = Ca(NO3)2 + 2H2O

Fe2O3 + 6HCl = 2FeCl3 + 3H2O

FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

Ca(OH)2 + 2NH4Cl = CaCl2 + 2NH3 + 2H2O

Answer 3

Balancing Chemical Equations

a) Cu(NO3)2 + 2KOH = Cu(OH)2 + 2KNO3 - The left side of the equation is balanced by ensuring there are the same number of each type of atom on both sides of the equation. In this case, there are 2 potassium (K), 2 nitrogen (N), 6 oxygen (O), 2 hydrogen (H), 1 copper (Cu), and 2 hydroxide (OH) on each side.

b) Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O - Balancing the equation involves ensuring that the number of atoms for each element is the same on both sides. In this case, there are 1 calcium (Ca), 2 nitrogen (N), 6 oxygen (O), 4 hydrogen (H), and 2 hydroxide (OH) on each side.

c) FeCl3 + 3H2O = Fe(OH)3 + 3HCl - Balancing the equation involves adjusting the coefficients of the compounds to ensure the same number of atoms for each element on both sides. In this case, there are 1 iron (Fe), 3 chlorine (Cl), 9 oxygen (O), 6 hydrogen (H), and 3 hydroxide (OH) on each side.

d) FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl - Balancing the equation involves adjusting the coefficients of the compounds to ensure the same number of atoms for each element on both sides. In this case, there are 1 iron (Fe), 3 chlorine (Cl), 3 sodium (Na), 3 oxygen (O), 6 hydrogen (H), and 3 hydroxide (OH) on each side.

e) CaCO3 + 2HCl = CaCl2 + H2O + CO2 - Balancing the equation involves ensuring that the number of atoms for each element is the same on both sides. In this case, there are 1 calcium (Ca), 1 carbon (C), 3 oxygen (O), 2 hydrogen (H), 2 chlorine (Cl), and 1 hydroxide (OH) on each side.

f) CaO + 2NH4Cl = CaCl2 + 2H2O + 2NH3 - Balancing the equation involves ensuring that the number of atoms for each element is the same on both sides. In this case, there are 1 calcium (Ca), 2 nitrogen (N), 6 hydrogen (H), 2 chlorine (Cl), and 2 hydroxide (OH) on each side.

These balanced chemical equations represent the reactions based on the given right-hand sides of the equations.