stanman942 stanman942

13-05-2020
Chemistry

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Suppose 50 mL of KOH with unknown concentration is placed in a flask with bromthymol blue indicator. A solution of 0.10 M H2SO4 is dripped into the KOH solution. After exactly 33.4 mL of H2SO4 is added, the indicator changes from blue to yellow. What is the concentration of the KOH?

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JLopez426 JLopez426

13-05-2020

Answer:

0.13 M

Explanation:

Since 1 mole of H2SO4 reacts with 2 moles of KOH, there are twice as many moles of KOH at the equivalence point as H2SO4

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