Question

How many milliliters of sodium metal, with a density of 0.97 g/mL, would be needed to produce 43.6 grams of sodium hydroxide in the single replacement reaction below? Be sure to show the work that you did to solve this problem.

Answer 1

unbalanced equation: Na + H2O yields NaOH + H2

Answer 2

is my working correct?

Answer 3

Na + H20 ----> NaOH + 0.5H2

Answer 4

balanced equation: 2Na + 2H2O yields 2NaOH + H2
43.6gNaOH*1molNaOH/40gNaOH=1.09molNaOH*2molNa/2molNaOH=1.09molNa*23gNa/1molNa=25.0gNa
density=mass/volume
volume=mass/density
volume Na=25g/0.97g/mL=25.8mL

Answer 5

yup right

Answer 6

did u calculate the answer

Answer 7

yup

Answer 8

thnx