Answer:
Mass = 239.62 g
Explanation:
Molality is given as,
m = Moles of Solute / Kg of Solvent --- (1)
Data Given;
Molality = 1.5 m
Mass of Solvent = 750 g = 0.75 Kg
Solving eq. 1 for Moles,
Moles = Molality × Mass of Solvent
Putting values,
Moles = 1.5 mol.Kg⁻¹ × 0.75 Kg
Moles = 1.125 mol
Calculating mass from moles,
Moles = Mass / M.mass
Or,
Mass = Moles × M.mass
Putting values,
Mass = 1.125 mol × 213 g.mol⁻¹
Mass = 239.62 g
Answer:
Mass of iodine = 1954.26 g
Explanation:
Given data:
Mass of chlorine react = 546 g
Mass of iodine produced = ?
Solution:
Chemical equation:
2NaI + Cl₂ → 2NaCl + I₂
Number of moles of chlorine:
Number of moles = mass/molar mass
Number of moles = 546 g/71 g/mol
Number of moles = 7.7 mol
Now we will compare the moles of chlorine with iodine.
Cl₂ : I₂
1 : 1
7.7 : 7.7
Mass of iodine:
Mass = number of moles × molar mass
Mass = 7.7 mol × 253.8 g/mol
Mass = 1954.26 g
Answer:
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