Q6a) Calculate the number ofChloride ions in 222 g ofCalcium Chloride

1.	Q6a) Calculate the number ofChloride ions in 222 g ofCalcium Chloride (CaCl2).
Answer» Given : 222g of Calcium CHLORIDE (CACL2) To find : Number of Chloride ions Formula used : Number of mole = given mass ÷ molar mass Number of molecules = Number of mole × Avogadro's number Number of atom/ion = TOTAL Number of molecules × (Number of ion in one molecules) Additional points : ◕ Molar mass of Calcium chloride = 111 g/mol ◕ $\sf \: CaCl_2\: ➝\: Ca^{+2}\: + \:2Cl^-$ Solution : ✪ Number of MOLES of CaCl2 = 222÷111 ➠ Number of moles of CaCl2 = 2mol ✪ Number of molecules of CaCl2 = 2 × Avogadro's number ✪ 1 molecule of CaCl2 contain 2 ion of Cl ➠ Number of Chloride ion = 2 × (2 × 6.02 ×10²³) ➠ Number of Chloride ions = 24.08 × 10²³ ➠ Number of Chloride ions = 2.408 × 10²⁴ ANSWER : Number of Chloride ions = 2.408 × 10²⁴

Q6a) Calculate the number ofChloride ions in 222 g ofCalcium Chloride (CaCl2).

Answer»

Number of Chloride ions

Number of mole = given mass ÷ molar mass
Number of molecules = Number of mole × Avogadro's number
Number of atom/ion = TOTAL Number of molecules × (Number of ion in one molecules)

◕ Molar mass of Calcium chloride = 111 g/mol

◕

$\sf \: CaCl_2\: ➝\: Ca^{+2}\: + \:2Cl^-$

✪ Number of MOLES of CaCl2 = 222÷111

➠ Number of moles of CaCl2 = 2mol

✪ Number of molecules of CaCl2 = 2 × Avogadro's number

✪ 1 molecule of CaCl2 contain 2 ion of Cl

➠ Number of Chloride ion = 2 × (2 × 6.02 ×10²³)

➠ Number of Chloride ions = 24.08 × 10²³

➠ Number of Chloride ions = 2.408 × 10²⁴

Number of Chloride ions = 2.408 × 10²⁴