20 gm sample containing Mg. is treated with excess of 2M HCl. As a result 11.2 litre of `H_(2)` gas at NTP was evolved. Find % purity of Mg in sample

Question

20 gm sample containing Mg. is treated with excess of 2M HCl. As a result 11.2 litre of `H_(2)` gas at NTP was evolved. Find % purity of Mg in sample

20 gm sample containing Mg. is treated with excess of 2M HCl. As a result 11.2 litre of `H_(2)` gas at NTP was evolved. Find % purity of Mg in sample
A. 0.6
B. 0.3
C. 0.75
D. 0.72

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

`Mg+2HClrarrMgCl_(2)+H_(2)`
`n_(Mg)=n_(H_(2))=(11.2)/(22.4)=(1)/(2)`
`w_(Mg)=12gm`
`% "purity"=(12)/(20)xx100=60`

5 views Answered 2023-02-05 15:29