Problemas
6. How many formula units of sodium chloride salt is produced from 18.0 g of sodium? 2Na(s)+Cl_(2)(g)arrow 2NaCl(s) 4.71times 10^23 formula units of NaCl E 9.43times 10^23 formula units of NaCl 2.17times 10^25 formula units of NaCl E 1.08times 10^25formula units ofNaCl
Roztwór
Olivia
élite · Tutor durante 8 años
4.7
(295 Votos)
Respuesta
To solve this problem, we need to follow these steps:1. Calculate the number of moles of sodium (Na) in 18.0 g.2. Use the stoichiometry of the balanced chemical equation to determine the number of moles of sodium chloride (NaCl) produced.3. Convert the number of moles of NaCl to the number of formula units.Step 1: Calculate the number of moles of sodium (Na) in 18.0 g.The molar mass of sodium (Na) is 22.99 g/mol.Number of moles of sodium (Na) = 18.0 g / 22.99 g/mol = 0.783 molStep 2: Use the stoichiometry of the balanced chemical equation to determine the number of moles of sodium chloride (NaCl) produced.According to the balanced chemical equation, 2 moles of sodium (Na) produce 2 moles of sodium chloride (NaCl).Number of moles of sodium chloride (NaCl) produced = 0.783 mol Na × (1 mol NaCl / 1 mol Na) = 0.783 mol NaClStep 3: Convert the number of moles of sodium chloride (NaCl) to the number of formula units.The number of formula units of sodium chloride (NaCl) can be calculated using Avogadro's number, which is 6.022 × 10^23 formula units/mol.Number of formula units of sodium chloride (NaCl) = 0.783 mol NaCl × (6.022 × 10^23 formula units/mol) = 4.71 × 10^23 formula unitsTherefore, the correct answer is:
formula units of NaCl