Question

Сделайте вывод, в каком соединении NaCl или CuCl2 массовая доля хлора больше.

Answer 1

Ответ:

В NaCl больше.

Объяснение:

CuCl₂ = 35,5 *2 / 135 * 100% = 53%

(В NaCl 60.6%)

Answer 2

Mass Fraction of Chlorine in NaCl and CuCl2

To determine which compound, NaCl or CuCl2, has a higher mass fraction of chlorine, we need to compare the molar masses and the molar masses of chlorine in each compound.

The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol, and it consists of one atom of sodium (Na) and one atom of chlorine (Cl). The molar mass of chlorine in NaCl is therefore 35.45 g/mol, which is the same as the molar mass of pure chlorine.

The molar mass of CuCl2 (copper(II) chloride) is approximately 134.45 g/mol, and it consists of one atom of copper (Cu) and two atoms of chlorine (Cl). The molar mass of chlorine in CuCl2 is therefore 2 * 35.45 g/mol = 70.90 g/mol.

Comparing the molar masses of chlorine in NaCl and CuCl2, we can conclude that the molar mass of chlorine in CuCl2 is higher than in NaCl.

Since the mass fraction of an element in a compound is calculated by dividing the molar mass of the element by the molar mass of the compound and multiplying by 100, we can infer that the mass fraction of chlorine is higher in CuCl2 than in NaCl.

Please note that the exact mass fractions of chlorine in NaCl and CuCl2 would depend on the specific quantities of the compounds being considered.