number of moles HC
Volume HCl in liters : 136 mL / 1000 => 0.136 L
0.258 x 0.136 => 0.035088 moles of HCl
Mole ratio:
2 HCl + Ca(OH)2 = CaCl2 + 2 H2O
2 moles HCl ------------------------ 1 mole Ca(OH)2
0.035088 moles HCl ------------- moles Ca(OH)2
moles Ca(OH)2 = 0.035088 x 1 / 2
moles Ca(OH)2 = 0.035088 / 2
= 0.017544 moles of Ca(OH)2
M = n / V
0.0197 = 0.017544 / V
V = 0.017544 / 0.0197
V = 0.890 L
0.890 in mL : 0.890 x 1000 => 890 mL
hope this helps!
