The density of a 10.0% by mass KCl solution in water is 1.06gcm−3 Its molarity is

The density of a 10.0% by mass KCl solution in water is $1.06 g {cm}^{- 3}$ Its molarity is

A
1.489M
B
1.420M
C
$1.420 mol {kg}^{- 1}$
D
$1.489 molkg$

Solution:

$M = \frac{(10 g / 74.5 g {mol}^{- 1})}{(100 g / 1.06 g {cm}^{- 3})} = 1.42 \times 10^{- 3} mol {cm}^{- 3} = 1.42 mol {dm}^{- 3}$

Related content

USA Full Form – United States of America

NRC Full Form – National Register of Citizens

Distance Speed Time Formula

Refractive Index Formula

Electric Current Formula

Ohm’s Law Formula

Wavelength Formula

Electric Power Formula

Resistivity Formula