Basic solutions _____________. Have a higher concentration ions than hydroxide i

Question

Basic solutions _____________. Have a higher concentration ions than hydroxide ions have a lower concentration ions than hydroxide ions turn blue litmus paper to pink decolorize phenolphthalein solutions What is the hydroxide-ion concentration of 4.75 times 10^-5 mol/L 2.10 times 10^-10 mol/L 5.25 times 10^-10 mol/L 4.75 times 10^-5 mol/L -4.75 times 10^-5 mol/L Which solution is the basic solution? A solution whose[H+] = 10^0 a solution whose pH = 0 All of the above have the same degree of basicity. What is the hydroxide-ion concentration of an aqueous solution having a path pH of 4.72? 4.72 times 106-5 mol/L 1.90 times 10^-14 mol/L 5.25 times 10^-10 mol/L 1.91 times 10^-5 mol/L A charge in pH from 10 to 7 __________. Increases the acidity 1000 times reduces the acidity 3000 times increases the acidity 3 times increases the acidity 3000 times

Explanation / Answer

18.

use the ionic product of the water equation

[H3O+] [HO-] = 1.0 x 10^-14

[4.75 x 10^-5] [HO-] = 1.0 x 10^-14

[HO-] = 1.0 x 10^-14 / 4.75 x 10^-5

[HO-] = 2.1 x 10^-10 mol / L

option A is correct answer.

19.

option D is correct answer

20.

from pH find the pOH

pH + pOH = 14

pOH = 14-pH = 14 - 4.72 = 9.28

[HO-] = 10^-pOH = 10^-9.28 = 5.2 x 10^-10 mol / L

option C is the correct answer.

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