Acids and Bases

Q: Which of the following is the strongest oxy acid?

(a) :  HClO4
(b) :  HClO3
(c) :  HClO2
(d) :  HClO
(e) :  None of the Above
Answer:  HClO4
Explanation:  HClO4 is strongest acid because strength of acid increases by increasing number of oxygen atom around the central atom

Q: If sodium phosphate is added to the following reaction, what will happen to the overall reaction? H3PO4 + 3NaOH ↔ Na3PO4 + 3H2O

(a) :  Less of the reactants will react in order to compensate for the additional Na3PO4
(b) :  More of the reactants will react in order to produce more H2O, which balances the (excess Na3PO4
(c) :  The reaction will not be changed at all
(d) :  The equilibrium constant will be changed to a larger number
(e) :  None of the Above
Answer:  Less of the reactants will react in order to compensate for the additional Na3PO4
Explanation:  Neutralization are non-redox repctions. There. is no change in the oxidation number of the elements that snake up the reactant and ptoducts.

Q: Which of the following compounds is the strongest acid?

(a) :  H2SO4
(b) :  CH3CO2H
(c) :  HNO3
(d) :  all have the same strengths
(e) :  None of the Above
Answer:  H2SO4
Explanation:  

Q: What is the pH of a 1 molar solution, of an acid that has a Ka = 10-8 ?

(a) :  1
(b) :  4
(c) :  8
(d) :  10
(e) :  None of the Above
Answer:  4
Explanation:  

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