<ol><li>10 mol of Zn react with 10 mol of HCl. Calculate the number of moles of H2 produced.</li></ol> (a) 5 mol (b) 10 mol (c) 20 mol (d) 2.5 mo

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ANSWER SHOUD BE "a".

EXPLANATION ......

Zn reacts with HCl and form ZnCl2 and H2 .

Balance Reaction is Zn + 2HCl ----- ZnCl2 + H2 .

When 10 mol of Zn react with 10 mol of HCl then HCl is Limiting Reagent So HCl Completely React .........

So , 2mol of HCl gives 1 mol of H2 from Balance Reaction ..

So , 10 mol of HCl gives 5 mol of H2 gas from Balance Reaction ..

finally So , 5 moles of H2 gas are produced .

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