Suppose you start with a solution that is at pH 8. If enough acid is added to make the [H+] 1000 times larger, what is the new pH? (Hint: Although this problem can be done using a calculator, it can easily be done in your head if you understand the principle.) a. 3 b. 4 c. 7 d. 11 e. 5
Blog
The equilibrium 4 equation for the formation of the complex…
The equilibrium 4 equation for the formation of the complex Cd(CN)42- is: Cd2+ + 4CN- ⇌ Cd(CN)42- Write the equilibrium constant expression Kf , and then answer the following question. If Cd(CN)42- is a “typical” complex (which it is), which of the following statement(s) would you expect to be true? 1. At equilibrium, there will be more Cd2+ and CN- than Cd(CN)42- 2. At equilibrium, there will be more Cd(CN)42- than Cd2+ and CN- 3. The Kf value is small (- power of 10) 4. The Kf value is large (+ power of 10) a. 2 and 4 only b. 1 and 3 only c. 1 and 4 only d. 2 and 3 only e. 2 only Tables.pdf Periodic Table with New Elements.pdf
Classify HClO4 as a strong acid, weak acid, strong base, or…
Classify HClO4 as a strong acid, weak acid, strong base, or weak base, and then answer the following question. What is the pH of 8.2 x 10=4 M HClO4 (aq)? a. 17.1 b. 10.9 c. 2.5 d. 3.1 e. 7.1
Suppose that a chemist runs the following reaction with init…
Suppose that a chemist runs the following reaction with initial pressures as shown:
What is the correct name of NO2- ?- a. nitride b. nitrate c….
What is the correct name of NO2- ?- a. nitride b. nitrate c. nitrogen trioxate d. nitrite e. nitrogenoxite
What is the correct formula for Aluminum oxide? a. AlO2 b…
What is the correct formula for Aluminum oxide? a. AlO2 b. Al2(O2)3 c. AlO d. Al2O3 e. Al2O
What is the pH of 0.05 M ClO- (aq) from the previous problem…
What is the pH of 0.05 M ClO- (aq) from the previous problem. a. 9.59 b. 3.89 c. 10.11 d. 12.70 e. 4.41
Classify NH3 as a strong acid, weak acid, strong base, or we…
Classify NH3 as a strong acid, weak acid, strong base, or weak base, and then answer the following question. What is the pH of 1.17 M NH3 (aq)? a. 4.59 b. 11.66 c. 2.34 d. 9.41 e. 9.25
What is the correct formula for Sodium chromate? a. Na2CrO4…
What is the correct formula for Sodium chromate? a. Na2CrO4 b. Na(CrO4)2 c. Na(CrO3)2 d. Na2CrO3 e. Na2Cr
Suppose the reaction: 2 HI(g) → H2 (g) + I2 (g) is seco…
Suppose the reaction: 2 HI(g) → H2 (g) + I2 (g) is second order with respect to HI(g). If k = 0.0332 M-1 x s-1 and [HI]o = 0.250 M, what is [HI] at time t = 9.3 s? a. 4.31 M b. 0.184 M c. 0.271 M d. 0.00208 M e. 0.232 M Tables.pdf Periodic Table with New Elements.pdf