Author Question: A solution is 0.20 M Ba(OH)2(aq). How many moles of HCl(aq) must be added to neutralize 100.0 mL of ... (Read 96 times)

jlmhmf · **on:** Jul 8, 2021

Question 1

A sample of magnesium oxide was dissolved in 50.0 mL of 0.183 M hydrochloric acid, and the excess acid was titrated to a phenolphthalein end-point by 13.4 mL of 0.105 M sodium hydroxide. What was the mass of the magnesium oxide sample?
◦ 312 mg
◦ 184 mg
◦ 156 mg
◦ 104 mg
◦ 77.8 mg

Question 2

A solution is 0.20 M Ba(OH)₂(aq). How many moles of HCl(aq) must be added to neutralize 100.0 mL of the solution?
◦ 0.020 mol
◦ 0.080 mol
◦ 0.040 mol
◦ 0.40 mol
◦ 0.80 mol

at · **Reply #1 on:** Jul 8, 2021

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