Concentrated hydrochloric acid has a density of 1.15 g cm–3 and contains 30.0% by mass hydrogen chloride. Determine the concentration of the HCl
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30% by mass of HCl means 100g of solution contains 30g of HCl
Moles of HCl = 30g/36.5g/mol = 0.82 mol
Volume of solution = Weight of Solution / Density
V = 100/1.15 = 86.95ml
Molarity = (Moles of solute / Volume of solution in ml) * 1000
= (0.82 / 86.95) * 1000
= 9.43 M
Moles of HCl = 30g/36.5g/mol = 0.82 mol
Volume of solution = Weight of Solution / Density
V = 100/1.15 = 86.95ml
Molarity = (Moles of solute / Volume of solution in ml) * 1000
= (0.82 / 86.95) * 1000
= 9.43 M
aniruddh101010:
thanks...really helpful
You’re welcome :)
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