In the lab, 1. we put sodium oxalate into lead nitrate 2. we put sulphuric acid...

In the lab,

1. we put sodium oxalate into lead nitrate

2. we put sulphuric acid into lead nitrate

After both solution has precipated, we removed the liquids and pour nitric acid to each of precipitates in seperate test tubes.

The observation was that

First tube was much thinner and the second tube become much thicker (in terms of white-ish color) after adding nitric acid.

What is the reason for this difference?

Expert Solution

The reactions are

1) Na₂C₂O₄(aq) + Pb(NO₃)₂(aq) 2 NaNO₃(aq) + PbC₂O₄(s)

2) H₂SO₄ (aq) + Pb(NO₃)₂ (aq) PbSO₂ (s) + 2 HNO₃ (aq)

Lead oxalate in nitric acid leads to the formation of a compound called oxalo-nitrate of lead which has some solubility in nitric acid.

Lead Sulphate is insoluble or poorly soluble in diluted acids.
Hot concentrated HNO₃ dissolves PbSO₄ moderately because of equilibrium reaction
2PbSO₄ + 2HNO₃ Pb(HSO₄)₂ + Pb(NO₃)₂

queen_honey_blossom answered 2 years ago

10.00g lead (II) nitrate reacts with 10.00g sodium iodide in aqueous solution to produce solid lead...

10.00g lead (II) nitrate reacts with 10.00g sodium iodide in aqueous solution to produce solid lead (II) iodide and aqueous sodium nitrate. What mass of NaI remains? I have the answer, and the process of using stoichiometry to find it. I just do not understand the logic of the stoichiometry and why you use it to find the NaI consumed. How is do you know it is "consumed" based off of the stoichiometry you do?

Sodium fluoride and lead nitrate are both soluble in water. If 0.0946 g of NaF and...

Sodium fluoride and lead nitrate are both soluble in water. If 0.0946 g of NaF and 0.362 g of Pb(NO3)2are dissolved in sufficient water to make 1.50 L of solution, will a precipitate form? How do you know if there should be a precipitate or not? What is the chemical formula for the possible precipitate? The Ksp for lead fluoride is 3.7 x 10-8.

What is the pH of a 0.39 M solution of sodium oxalate, Na2C2O4? Acid ionization constants...

What is the pH of a 0.39 M solution of sodium oxalate, Na2C2O4? Acid ionization constants for oxalic acid are Ka1 = 5.6 x 10-2 and Ka2= 5.4 x 10-5.

ACID/BASE PRACTICE PROBLEMS (a) 3 moles of sodium nitrate are placed in 1 L of water....

ACID/BASE PRACTICE PROBLEMS (a) 3 moles of sodium nitrate are placed in 1 L of water. Calculate the pH. (b) Calculate the Ka and the % ionization of a weak acid if 0.02 moles of the acid is added to 1 L water and makes a solution with a pH of 4.75. (c) A solution containing 0.2 moles of NaOH, 0.3 moles of HCl, and 0.1 moles of HF (Ka=7.1e-4) is added to 1 L of water. Calculate the pH...

Aqueous nitric acid reacts with solid sodium carbonate to produce aqueous sodium nitrate, carbon dioxide, and...

Aqueous nitric acid reacts with solid sodium carbonate to produce aqueous sodium nitrate, carbon dioxide, and water. If 10.0 mL of a 1.00 M nitric acid solution reacts with 5.00 g of sodium carbonate, what volume of dry carbon dioxide will be produced at a temperature of 32.5 degrees Celcius at a pressure of 0.96 atm?

1 ) What volume of 0.150 M hydrochloric acid reacts with excess lead (II) nitrate solution...

1 ) What volume of 0.150 M hydrochloric acid reacts with excess lead (II) nitrate solution in order to yield 1.88 g lead ( II) chloride precipitate? 2) Calculate the boiling point and the freezing point of 50.0 g of AlCl3 dissolved in 400g of water, note that AlCl3 produces four particles 3) If 45.5 mL of 0.150 M sodium sulfate solution reacts with 50.0 mL of 0.175 M aqueous barium nitrate, what is the mass of Ba SO4 precipitate

Question

In the lab, 1. we put sodium oxalate into lead nitrate 2. we put sulphuric acid...

Solutions

Expert Solution

Related Solutions