Question

lution: What is the molarity of 245 g of H, SO4 dissolved in 1.00 L of solution?

Answer 1

Answer:

Explanation:

.

Answer 2

Molar mass of H2SO4:-

$\\ \large\sf\longmapsto H_2SO_4$

$\\ \large\sf\longmapsto 2(1u)+32u+4(16u)$

$\\ \large\sf\longmapsto 2u+32u+64u$

$\\ \large\sf\longmapsto 98u$

$\\ \large\sf\longmapsto 98g/mol$

• Given mass=245g

$\boxed{\sf No\:of\:moles=\dfrac{Given\:mass}{Molar\:Mass}}$

$\\ \large\sf\longmapsto No\:of\:moles=\dfrac{245}{98}$

$\\ \large\sf\longmapsto No\:of\:moles=2.5mol$

Now

$\boxed{\sf Molarity=\dfrac{Moles\:of\:solute}{Volume\:of\:solution\;in\;L}}$

$\\ \large\sf\longmapsto Molarity=\dfrac{2.5}{1}$

$\\ \large\sf\longmapsto Molarity=2.5M$