4. Calcium reacts with water as shown. Ca(s) + 2H2O(l) = Ca(OH)2(aq) + H2(g)what is the total mass of the solution that remains when 40 g of calcium reacts with 100 g of water

4. Calcium reacts with water as shown. Ca(s) + 2H2O(l) = Ca(OH)2(aq)

1.	4. Calcium reacts with water as shown. Ca(s) + 2H2O(l) = Ca(OH)2(aq) + H2(g)what is the total mass of the solution that remains when 40 g of calcium reacts with 100 g of water
Answer» 4480cm^3 Explanation:Here, calculation is DONE, using the BALANCED CHEMICAL equation as follows: Ca+2H 2 O→Ca(OH) 2 +H 2 ACCORDING to the stoichiometry of reaction, 40 gm of Ca on complete reaction with water liberates =2 gm H 2 ∴8 gm of Ca, on complete reaction with water will liberates = 40 2 ×8 gm H 2 =0.40 gm H 2 = 2 0.40 ×22400cm 3 =4480cm 3 of H 2 at S.T.P.