At room temperature, MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 × 10-13. The true statement regarding MY and NY3 is:
1. | The molar solubility of MY in water is less than that of NY3. |
2. | The salts MY and NY3 are more soluble in 0.5 M KY than in pure water. |
3. | The addition of the salt of KY to a solution of MY and NY3 will have no effect on their solubilities. |
4. | The molar solubilities of MY and NY3 in water are identical. |
When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, the pH of the resulting solution will be:
1. | 12.65 | 2. | 2.0 |
3. | 7.0 | 4. | 1.04 |
An acidic buffer cannot be formed by which of the following combinations is:
1.
2.
3.
4.
If the equilibrium constant for N2(g) + O2 (g) ⇄ 2NO(g) is K, the equilibrium constant for \(\frac{1}{2}\)N2(g) + \(\frac{1}{2}\)O2(g) ⇄ NO(g) will be?
1.
2.
3. K
4.
Aqueous solution of which of the following compounds is the best conductor of electric current?
1. Acetic acid, \(\mathrm{C_{2} H_{4} O_{2}}\)
2. Hydrochloric acid, \(\mathrm{HCl}\)
3. Ammonia, \(\mathrm{N H_{3}}\)
4. Fructose, \(\mathrm{C_{6} H_{12} O_{6}}\)
The value of the equilibrium constant for a particular reaction is 1.6 × 1012. When the system is in equilibrium, it will include:
1. All reactants
2. Mostly reactants
3. Mostly products
4. Similar amounts of reactants and products
The Ksp of Ag2CrO4, AgCl, AgBr, and Agl are respectively, 1.1 × 10–12, 1.8 × 10–10, 5.0 × 10–13, 8.3 × 10–17. Which one of the following salts will precipitate last if solution is added to the solution containing equal moles of NaCl, NaBr, Nal, and Na2CrO4?
1. Agl
2. AgCl
3. AgBr
4. Ag2CrO4
Which of the following salts will give the highest pH in water?
1. KCl
2. NaCl
3. Na2CO3
4. CuSO4
For the reversible reaction:
N2(g) + 3H2(g) \(\rightleftharpoons\) 2NH3(g) + heat
The equilibrium shifts in a forward direction:
1. by increasing the concentration of
2. by decreasing the pressure.
3. by decreasing the concentration of
4. by increasing pressure and decreasing temperature.