What is the maximum concentration of Ni²⁺ that can be added to a 0.00130 M solution of Na₂CO₃ before a precipitate will form? (Ksp for NiCO₃ is 1.30 × 10⁻⁷)

What is the maximum concentration of Ag⁺ that can be added to a 0.00140 M solution of Na₂CO₃ before a precipitate will form? (Ksp for Ag₂CO₃ is 8.10 × 10⁻¹²)

What is the maximum concentration of Ni²⁺ that can be added to a 0.00150 M solution of Na₂CO₃ before a precipitate will form? (Ksp for NiCO₃ is 1.30 × 10⁻⁷)

Consider the titration of 15.75 mL of 0.549 M potassium propanoate, CH3CH,CO,K, with 0.207 M HNO3. What is the pH of the solution after 39.83 mL of the HNO3 has been added? (pK, of CH;CH-COH = 4.691)

-4 = A chemistry graduate student is given 500. mL of a 0.20M nitrous acid (HNO₂) solution. Nitrous acid is a weak acid with K = 4.5 × 10 What mass of NaNO₂ should the student dissolve in the HNO₂ solution to turn it into a buffer with pH = 3.46? You may assume that the volume of the solution doesn't change when the NaNO₂ is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. [] x10 Ś

At a certain temperature, the solubility of strontium arsenate, Sr3 (ASO4)2, is 0.0620 g/L. What is the Ksp of this salt at this temperature? Ksp =

What is the maximum concentration of Ag⁺ that can be added to a 0.00710 M solution of Na₂CO₃ before a precipitate will form? (Ksp for Ag₂CO₃ is 8.10 × 10⁻¹²)

Calculating the pH of a weak acid titrated with a strong base 0/5 Izabella An analytical chemist is titrating 127.4 mL of a 0.4200M solution of nitrous acid (HNO 2) with a 0.2400M solution of KOH. The pK of nitrous acid is 3.35. Calculate the pH of the acid solution after the chemist has added 260.9 mL of the KOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of KOH solution added. Round your answer to 2 decimal places. pH = 0 ☑ G 000 18 Ar B

What is the maximum concentration of Ni2+ that can be added to a 0.00460 M solution of Na,CO, before a precipitate will form? (Ksp for NiCO, is 1.30 × 107) 3