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Chapter 10: Q.10.9 (page 359)

Identify each of the solutions in problem 10.88 as acidic, basic, or neutral.

Short Answer

Expert verified

a. Neutral

b. acidic

c. acidic

d. acidic

Step by step solution

01

Given Information

Acidic solutions are estimated to have lower pH values than basic or alkaline solutions. pH or "potential of hydrogen" is a scale used to specify the acidity or basicity of a fluid solution.

$a . [{OH}^{-}] = 1.0 \times 10^{- 7} M b . [H_{3} O^{+}] = 4.2 \times 10^{- 3} M c . [H_{3} O^{+}] = 0.0001 M d . [{OH}^{-}] = 8.5 \times 10^{- 9} M$

02

Explanation

A solution is acidic if its pH is less than $7$ . A solution is basic if its pH is greater than $7$ . A solution is neutral if its pH is equal to $7$ .

Hence, applying the above logic the solutions are -

a. $[{OH}^{-}] = 1.0 \times 10^{- 7} M$ is Neutral

b. $[H_{3} O^{+}] = 4.2 \times 10^{- 3} M$ is acidic

c. $[H_{3} O^{+}] = 0.0001 M$ is acidic

d. $[{OH}^{-}] = 8.5 \times 10^{- 9} M$ is acidic

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Most popular questions from this chapter

In Larry's esophagal pH test, a pH value of 3.60 was recorded in the esophagus. What is the $[H_{3} O^{+}]$ in his esophagus?

A 10.0-mL sample of vinegar, which is an aqueous solution of acetic acid, ${HC}_{2} H_{3} O_{2}$ , requires $16.5 mL$ of a $0.500 MNaOH$ solution to reach the endpoint in a titration. What is the molarity of the acetic acid solution? $(10.7)$

{HC}_{2} H_{3} O_{2} (a q) + NaOH (a q) ⟶ H_{2} O (f) + {NaC}_{2} H_{3} O_{2} (a q)

Which of the following represents a buffer system? Explain.

a. $NaOH$ and $NaCl$

b. $H_{2} {CO}_{3}$ and ${NaHCO}_{3}$

c. $HF$ and $K F$

d. $KCl$ and $NaCl$

Identify the weaker acid in each of the following pairs:

a. $HCl$ or ${HSO}_{4}^{-}$

b. ${HNO}_{2}$ or $HF$

c. ${HCO}_{3}^{-}$ or ${NH}_{4}^{+}$

Identify each of the solutions in problem 10.87 as acidic, basic, or neutral.

See all solutions

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