Question

0.2M ,100ml HNO3 solution is diluted with 100 ml water. find new molarity​

Answer 1

Answer:

new molarity Will be 0.1

Answer 2

$\sf{\green{Given}}\begin{cases}</p><p>\sf{Initial\: Molarity\: (M_{1}) = 0.2}\\</p><p>\sf{Final \: Molarity \: (M_{2}) = ? }\\ \\</p><p>\sf{Initial \: Volume \: (V_{1}) = 100\: ml}\\</p><p>\sf{Final \: Volume\: (V_{2}) = 200 \: ml}</p><p>\end{cases}$

We know that :

$\sf{\red{•\: \: M_{1} × V_{1} = M_{2} × V_{2}}}$

$\sf{\implies\: 0.2 × 100 = M_2 × 200}$

$\sf{\implies\: 20 = M_2 × 200}$

$\sf{\implies\: M_2 = \frac{20}{200}}$

$\sf{\implies\: M_2 = 0.1\: M \: \:or\: \: 0.1\: mol/L}$

∴ The new Molarity is 0.1 M