Answer
a. Add 0.500 moles of NaOH and fill to two liters with water
b. Add 0.500 liters of NaOH and fill to two liters with water
c. Add 0.200 moles of $K_2CrO_4$ and fill to two liters with water
d. Add 0.114 L of $K_2CrO_4$ and fill to two liters with water
Work Step by Step
a.
$1*V=0.250*2.00\Rightarrow V=0.500$ moles
b.
$1*V=0.250*2.00 \Rightarrow V=0.500$ L
c.
$1*V=0.100*2.00 \Rightarrow V=0.200$ moles
d.
$1*V = 0.175*2.00 \Rightarrow V=0.114$ L
