1.

Calculate the number of moles of hydrogen gas that can be produced by the reaction of 0.750 moles of hydrochloric acid with calcium.

Answer»

Ca (s) + 2HCl → CaCl2 + H2\(\uparrow\) 

From the above balance chemical equation. we can conclude that.

2 moles of HCl react with one mole of Ca to produce one mole CaCl2 and one mole of hydrogen gas.

\(\therefore\) 0.750 mole HCl on reaction with Ca can produce

 = \(\frac12\times0.750\) mole H2 gas

 = 0.375 mole H2 gas.



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