Write the molecular formula of a salt that, when dissolved in water, produces the solution with...

Write the molecular formula of a salt that, when dissolved in water, produces the solution with an basic Ph?

Expert Solution

1) Any species which dissociates in water to give Hydroxyl (OH-) ion and counter cation produce a basic solution.

The general formual for such a salt is Mx(OH)y.Which dissociates as,

Mx(OH)y ----------> xM⁺ + yOH^- .

e.g. NaOH, KOH, Ba(OH)2 etc.

2) The salt of weak acid and strong base also on dissolution in water produces solution with basic of alkaline pH (pH>7)

Dissolution of salt in water is termed as hydrolysis of salt.

Hydrolysis of salt of weak acid and strong base is represented as,

BA + H2O <------------> BOH + HA

Salt Base (strong) Acid (weak)

BOH being strong base ionizes in water completely as, BOH -------> B⁺ + OH^- .

and HA being weak acid ionizes only slightly in water as, AH <----------> A^- + H⁺ .

Hence there is far greater concentration of OH- ions than H+ ions which produces basicity in the solution formed.

e.g. Sodium acetate (CH3COO^-Na⁺) salt. It is a salt of weak organic acid (CH3COOH acetic acid) and strong base (NaOH). I.e. a salt of weak acid and strong base. Hence aqueous solution of sodium acetate will form solution with basic pH (pH>7).

queen_honey_blossom answered 2 years ago

If the temperature drops when a salt is dissolved in water. Its heat of solution is...

If the temperature drops when a salt is dissolved in water. Its heat of solution is Select one: a. exothermic b. positive c. cold d. negative

Which one of the following salts, when dissolved in water, produces the solution with the highest...

Which one of the following salts, when dissolved in water, produces the solution with the highest pH? Which one of the following salts, when dissolved in water, produces the solution with the highest pH? CH3NH3I LiClO4 MgO NaHSO 4

The salt magnesium chloride is soluble in water. When 0.630 g of MgCl2 is dissolved in...

The salt magnesium chloride is soluble in water. When 0.630 g of MgCl2 is dissolved in 114.00 g of water, the temperature of the solution increases from 25.00 to 27.29 °C. Based on this observation, calculate the enthalpy of dissolution of MgCl2 (in kJ/mol). Assume that the specific heat of the solution is 4.184 J/g °C and that the heat absorbed by the calorimeter is negligible. ΔHdissolution = ? kJ/mol

When KNO3 is dissolved in water, the resulting solution is significantly colder than the water was...

When KNO3 is dissolved in water, the resulting solution is significantly colder than the water was originally. (a) What conclusions can you draw about the intermolecular attractions involved in the process? (b) Is the resulting solution an ideal solution?

Compounds and molecules such as LiOH will ionize partially when dissolved in water/solution. Compounds and molecules...

Compounds and molecules such as LiOH will ionize partially when dissolved in water/solution. Compounds and molecules such as C6H12O6 (sugar)will not conduct electricity when dissolved in water/solution. Compounds and molecules such as C4H3 (butane) will ionize completely when dissolved in water/solution. Compounds and molecules such as NH3 will conduct electricity when dissolved in water/solution. Which are true? Please explain why.

Write the formula for the phosphate salt (if the complex ion is a cation) or the...

Write the formula for the phosphate salt (if the complex ion is a cation) or the aluminum salt (if the complex ion is an anion) for the following ions. [Mo(CN)2(en)2]+ [Co(H2O)(OH)2Cl]-

You are making a stock salt solution by diluting 0.7563g of salt to 500mL with water....

You are making a stock salt solution by diluting 0.7563g of salt to 500mL with water. a) What is the analytical concentration (in mol/L) if the salt is sodium chloride? b) What is the analytical concentration of the solution (in mol/L) if the salt is Mohr's Salt? c) How would you prepare 0.5L of -2x10-4 M and -4x10-5 M solutions from your Mohr's stock solution? Round to reasonable aliquot sizes, keeping in mind common pipette volumes. d) Convert the concentrations...

Initially 10 grams of salt are dissolved into 35 liters of water. Brine with concentration of...

Initially 10 grams of salt are dissolved into 35 liters of water. Brine with concentration of salt 4 grams per liter is added at a rate of 5 liters per minute. The tank is well mixed and drained at 5 liters per minute. A.Let x be the amount of salt, in grams, in the solution after t minutes have elapsed. Find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of...

Suppose that 0.323 g of an unknown sulfate salt is dissolved in 50 mL of water....

Suppose that 0.323 g of an unknown sulfate salt is dissolved in 50 mL of water. The solution is acidified with 6M HCl, heated, and an excess of aqueous BaCl2 is slowly added to the mixture resulting in the formation of a white precipitate. 1. Assuming that 0.433 g of precipitate is recovered calculate the percent by mass of SO4 (2-) in the unknown salt. 2. If it is assumed that the salt is an alkali sulfate determine the identity...

A saturated, aqueous solution of a salt having the formula, AX3, is prepared. The equilibrium that...

A saturated, aqueous solution of a salt having the formula, AX3, is prepared. The equilibrium that is established is: AX3(s) <------> A3+(aq)+3X-(aq). At equilibrium, the concentration of X- is found to be 2.74x10-7 M. What is the solubility product constant, Ksp, for AX3? What is the solubility of this compound in a solution that is 1.529x10-2 M NaX (assume that NaX is a completely soluble compound).

Question