B. 4.5 M
To find the initial molarity, we can use the formula for dilution:
M1V1 = M2V2
Where:
M1 = initial molarity
V1 = initial volume
M2 = final molarity
V2 = final volume
Plugging in the values given:
M1(2.0 L) = (3.0 M)(3.0 L)
2M1 = 9.0
M1 = 4.5 M
Therefore, the initial molarity of the solution was 4.5 M.
A diluted solution of hydrofluoric acid has a volume of 3.0 L and a molarity of 3.0 M. If the original solution had a volume of 2.0 L, what was the initial molarity:
A2.0 М
B4.5 M
C8.0 M
D11 M
1 answer