Solution A has a pH of 3 and solution Z has a pH of 6. How many times greater is the hydronium ion concentration in solution A than the hydronium ion concentrat
Question
a pH of 6. How many times greater is the
hydronium ion concentration in solution A than
the hydronium ion concentration in solution Z?
(1) 100 (3) 3
(2) 2 (4) 1000
2 Answer
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1. User Answers Anonym
pH of a solution is ln[H3O+] so,in case of A pH=3 or,log[H3O+]=3 or,[H3O+]=10^3 in case of B pH=6 pr,log[H3O+]=6 or, [H3O+]=10^6 so,hydronium ion concentration in solution A /the hydronium ion concentration in solution Z =10^3/10^6 =1000 2) Ca(OH)2+2 HNO3=Ca(NO3)2+2 H2O so the answer is 2. 
2. User Answers kobenhavn
Answer: (4) 1000
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
[tex]pH=\log [H^+][/tex]
[tex]pH=log\frac {1}{H^+}[/tex]
Thus as pH and [tex]H^+[/tex] are inversely related, a solution having lower pH will have more amount of [tex]H^+[/tex] concentration. And a solution having more pH will have less amount of [tex]H^+[/tex] concentration.
1. Solution A has a pH of 3
[tex]13=log[H^+][/tex]
[tex][H^+_A]=10^{13}[/tex]
2. solution Z has a pH of 6.
[tex]16=log[H^+][/tex]
[tex][H^+_Z]=10^{16}[/tex]
Thus Solution A with low pH has higher [tex]H^+[/tex] concentration.
[tex]\frac{H^+_A}{H^+_Z}=\frac{10^{13}}{10^{16}}=10^3=1000[/tex]