Question

calcular la molaridad de 3,7 g de hidroxido de calcio en 50 ml de solucion

Answer 1

Mm Ca(OH)2= 74 g/mol
m= 3.7 g
v = 50 mL /1000 = 0.05 L

1. Calcular moles

n =  m / Mm
n = 3.7 g / 74  g/mol = 0.05 mol

2. M= mol/L
M = 0.05 mol / 0.05 L = 1 mol/L = 1M