Find pH

Could you show me how you solved to get pH of each solution: Solution A has [H3O+] = 7.2à—10-5 Solution B has [H3O+] = 7.2à—10-4 Solution C has [OH-] = 3.0à—10-11 Solution D has [OH-] = 6.5à—10-11 (i) Which solution has the highest pH? (ii) Which solution is the least acidic? (iii) Which solution is the most acidic? (iv) Which solution has the lowest pH?

solution stoichiometry-titrations

How many milliliters of 0.125M H2SO4 are needed to neutralize 0.200g of NaOH?

Chemistry multiple choice questions

the chemistry multiple choice questions are added as an attachment. do not necessarily need to show the work for solving the questions, as long as the answers are stated its all right. please also include a list at the end, with the question number and the answer beside it: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

Calculate the pH

1) Calculate the pH of the following solutions: (a) 0.010 M acetic acid (Ka= 1.76E-5) CH3COOH + H2O --> H3O+ + CH3COO- initial 0.010 -- ? ? Equilibrium 0.010-x -- ? ? Show how did you solve this equation to get 1.76E-5: Ka = [H3O][CH3COO]/[CH3COOH] = 1.76E-5 (b) 0.010 M hydrochloric acid (c) Which acid solution in Question#1(a) or #1(b) has the lower pH ? (d) Why does the acid solution noted in (c) have a lower pH ?

oxidizing and reducing agents

In the following reaction, identify the oxidizing and reducing agents. Br2 + H2 --> 2HBr a. H+ is the reducing agent, Br- is the oxidizing agent b. Br2 is the reducing agent, H+ is the oxidizing agent c. Br2 is the reducing agent, H2 is the oxidizing agent d. HCl is the reducing agent, Br2 is the oxidizing agent e. H2 is the reducing agent, Br2 is the oxidizing agent