How many moles of base with Kb =7 *10^3 were added to 1.0L of water if...

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Question

How many moles of base with Kb =7 *10^3 were added to 1.0L of water if the final pH of the solution is 9.5 at 25C? Show your work for full credit.

science chemistry

Answer 1

Answer #1

Given:- p^H = 9.5

[OH^-] = ?

We known, p^H + p^OH = 14

ie 9.5 + p^OH = 14

p^OH = 14 - 9.5 = 4.5

we have,

Here volume of water is 1 L. Hence mole of base are

Therefore, of base are added to 1 liter of water giving p^H of solution 9.5.

Answer 2

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