Other Chemistry Answers

Determine the Concentration of H+ , OH-, pH, and pOH of the following solutions:

1. 0.0100 M HCl
2. 0.0200 M HOCl [ HOCl(aq) + H2O(l) ⇄ H3O+(aq) + OCl-(aq); Ka = 3.0 x 10 -8]

2. The reaction of bromine gas with chlorine gas, shown here, has a Kc value 0f 7.20 at 200°C. If a close vessel was charged with the two reactants, each at initial concentration of 0.200 M, but with no initial concentration of BrCl, what would be the equilibrium concentration of BrCl?

Br2(g) + Cl2(g) ⇄ 2BrCl(g) Kc=7.20
Initial Concentration 0.200 0.200 0

Write the difference between electrolytic and galvanic cells.

Electrochemistry is a vast and interdisciplinary subject. Explain

Calculate the number of grams in the following
5. 1.0 liter of a 5.0 M solution of KOH.

6. 5.0 liters of a 0.8 M solution of H 2 SO 4

Calculate the number of liters of solution which can be made from each of the following

3. A 2.0 M solution using 80.0 grams of NaOH

4. A 6.0 M solution using 126 grams of HNO 3

Calculate the molarity (M) of the following solution
2. 8.28 grams of Ca(C 5 H 9 O 2 ) 2 in 414 mL of solution.

Calculate the molarity (M) of the following solution
1. 316 grams of MgBr 2 in 859 mL of solution.

What mass of water was used if the temperature went from 55oc to 100oc and the energy used was 65,000 j?

Calculate the pH of the solution that was formed after mixing of 150 mL of 0.200 M H3PO4 with 150 mL of 0.266 M NaOH. Remember to use the Henderson-Hassselbach equation and appropriate pKa value choosing one from pK1=2.12, pK2=7.21, pK3=12.32