Question

what is the volume of water to be added to 200 ml of 18 molar H2 S o4 solution to get 1.8 molar H2 S o4 solution​

Answer 1

Let volume of water to be added = V mL

initial volume of solution = 200mL

initial molarity of H2SO4 solution = 18M

final molarity of H2SO4 solution = 1.8M

we know a concept “ if we add water in solution only concentration change but number of mole of solute remains constant.”

so using formula,

$M_1V_1=M_2V_2$

here, $M_1$ = 18M, $V_1=200mL$ , $M_2$ = 1.8M and $V_2=(V+200)mL$

so, 18 × 200 = 1.8(200 + V)

or, 2000 = 200 + V

or, V = 1800 mL

hence volume of water to be added is 1800mL.

Answer 2

Explanation:

l hope this answer will help you