Question

For the neutralization reaction: 2 HCl + Ca(OH)2 → CaCl2 + 2H20, how many grams of Ca(OH)2 are required to produce 135 grams CaCl2? The reaction occurs in the presence of excess HCl.
A) 60.2 g
B) 90.4 g
C) 135 g
D) 180 g

Answer 1

Explanation:

ca = 40 , Cl = 35.5 , ca(oH)2 = 40+ 32+2=74

cacl2= 40+ 71= 111,

135×74/111 ~ = 90