Answer to Question #278897 in General Chemistry for elyse

Question

Calcium reacts with water to produce hydrogen gas and aqueous calcium hydroxide. (a) Write the balanced equation for the reaction. (b) How many mL of water (d= 1.00 g/mL) are required to produce 7.00 L of dry hydrogen gas at 1.05 atm and 32°C? 

Answer 1

H2O + Ca → H2 + CaO

Molar mass of H2= 2.016

7000/2.016=3472.22

Molar mass H2O=18.012

=3472.22×18.012=62541.67ml