how many g of HCL will be needed to prepare 500ml of 0.2 solution
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Answer:
What is 0.2?Is it molarity?molality?
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Answer:
3.446g
Explanation:
Molecular mass of HCl=34.46 g/mol
1 mole of HCl contain 1× 34.46 g HCl (no.of moles= given mass of solute/ molecular mass of solute)
2 moles of HCl contain 2×34.46 g HCl
3 moles of HCl contain 3× 34.46 g HCl
0.2 moles of HCl contain 0.2 × 34.46=6.892g HCl
Therefore 6.892 g of HCl in a litre of solution gives 0.2 molar HCl solution.
therefore for 500 ml will be half of it i.e. 6.892/2=3.446g
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