Question

calcular la molaridad de 5 gramos de acido sulfurico (H2SO4) en una disolucion de 180 ml .

Answer 1

Mm H2SO4 = 98 g/mol

1. convertir mL a L

L = 180 / 1000 = 0.180 L

2. calcular moles n = m/Mm

n = 5 g / 98 g/mol

n = 0.051 moles

3. calcular molaridad

M = n/V(L)

M = 0.051 mol / 0.180 L

M = 0.283 molar