Is the same number of molecules contained in 25 g of sulfuric acid and 25 g of sulfurous acid?
| May 23, 2021 | education
N = nNA
M (H2SO4) = 98 g / mol.
M (H2SO3) = 82 g / mol.
n (H2SO4) = 25: 98 = 0.255 mol.
n (H2SO3) = 25: 82 = 0.3 mol.
N (H2SO4) = 6 × 10 ^ 23 × 0.255 mol = 1.53 × 10 ^ 23.
N (H2SO3) = 6 × 10 ^ 23 × 0.3 mol = 1.8 × 10 ^ 23.
Answer: there are more molecules in sulfurous acid than in sulfuric acid.
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