Question

The number of milli moles of solute present in 10 ml of decimolar solution is:

• A. 1
• B. ${10}^{-3}$
• C. ${10}^{-2}$
• D. ${10}^{-1}$

Answer 1

The correct option is A 1

A decimolar solution is a $0.1$M solution,

Which has $0.1$ moles glucose in a litre of solution.

Let, $x$ moles of glucose in $10$ml of solution

$\Rightarrow \left(x\right)\left(1000ml\right)=\left(10ml\right)\left(0.1moles\right)$

$x={10}^{-3}$moles

$x=1$ millimoles

$\Rightarrow$ $1$millimoles of solute present in $10$ml of decimolar solution.