Question

1. The concentration of the solution containing 40 gram of
common salt in 320 gram of water in terms of mass by
mass percentage of solution is
(a) 1.11%
(6) 11.01%
(c) 11.1%
(d) 10.11%​

Answer 1

Answer:

option c

Step-by-step explanation:

We know that if the mass of solute and mass of solvent is given,

the concentration of the solution is given by

Mass of the solute/Mass of the solution X 100 %

Given,

Mass of the solute = 40g

Mass of the solvent = 320g

Therefore, the mass of the solution will be

=> (40+320)g

=> 360g

Applying the formula,

the concentration of the solution in terms of mass by mass = Mass of the solute/Mass of the solution X 100%

=> concentration = 40g / 360g X 100 %

=> concentration of the solution = 11.11%

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