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The reaction of HCl with NaOH is represented by the equation

HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

What volume of 0.555 M HCl is required to titrate 17.7 mL of0.359 M NaOH?

a) 3.53 mL b) 1.80mL c) 11.4mL d) 17.7mL e)27.4 mL

In a volumetric analysis experiment, a solution of sodiumoxalate (Na₂C₂O₄) in acidicsolution is titrated with a solution of potassium permanganate(KMnO₄) according to the following balanced chemicalequation:

2KMnO₄ (aq) + 8H₂SO₄ (aq) +5Na₂C₂O₄ (aq) → 2MnSO₄(aq) +8H₂O (l) +10CO₂ (g) +5Na₂SO₄ (aq) + K₂SO₄(aq)

What volume of 0.0388 M KMnO₄ is required to titrate0.134 g of Na₂C₂O₄ dissolved in20.0 mL of solution?

a) 1.38 mL b) 3.45mL c) 10.3 mL d) 25.8 mL e) 20.0 mL

In order to dilute 35.5 mL of 0.533 M HCl to 0.100 M, the volumeof water that must be added is

a) 28.8 mL. b) 6.66 mL c) 189mL d) 0.00150 mL e) 154mL

The concentration of sulfate in a sample of wastewater is to bedetermined by using gravimetric analysis. To a 100.0-mL sample ofthe wastewater is added an excess of calcium nitrate, forming theinsoluble calcium sulfate (MM = 136.1 g/mol) according to thebalanced equation given below. The solid calcium sulfate is dried,and its mass is measured to be 0.7485 g. What was the concentrationof sulfate in the original wastewater sample?

SO₄^2-(aq) +Ca(NO₃)₂(aq) → CaSO₄(s) +2NO₃^-(aq)

a) 1.818 M b) 10.19 M c) 0.05500 M d) 18.8 M