Answer to Question #160551 in General Chemistry for leigh

Question

How much NH 4 OH will be needed to produce a 650-mL 0.45 M solution?

Answer 1

Volume = 650 ml = 0.650L

Molarity = 0.45M

Molarity = no. of moles / volume (in litres)

0.45 = moles/0.650

moles = 0.2925

1 moles NH₄OH contains = 35.0458 g

0.2925 moles of NH₄OH contains =

35.0458×0.2925 = 10.2508965g