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4.6 g of sodium is treated with excess o...

4.6 g of sodium is treated with excess of water. Calcium the volume of hydrogen evolved at N.T.P

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The correct Answer is:
2240 mL
`underset(2xx23=46g)(2Na+2H_(2)O)rarr underset(22400mL)(2NaOH+H_(2))`
46 g of Na evolve hydrogen at N.T.P = 22400 mL
4.6 g of Na evolve hydrogen at N.T.P `= (22400xx4.6)/(46)=2240mL`.
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