Question

A student was studying the PH differences in samples from two streams ,A and B .the student measured a PH of 4 in stream A and a PH in stream B .compared to the hydronium ion concentration in stream A ,stream B

Answer 1

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Answer 2

The given question is incomplete. The complete question is:

A student was studying the PH differences in samples from two streams ,A and B .the student measured a PH of 4 in stream A and a PH of 2 in stream B.

What is the hydronium ion concentration in stream B compared to the hydronium ion concentration in stream A.

The hydronium ion concentration in stream B is 100 times compared to the hydronium ion concentration in stream A.

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.

$pH=-\log [H^+]$

1. Stream A with pH of 4

$4=-\log [H^+]$

$[H^+]=10^{-4}$

2.  Stream B with pH of 2

$2=-\log [H^+]$

$[H^+]=10^{-2}$

$\frac{H^+_B}{H^+_A}=\frac{10^{-2}}{10^{-4}}=100$

$[H^+_B]=100\times [H^+_A]$

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