Chemistry, 24.06.2019 07:50 Tcareyoliver

"each value below represents a different aqueous solution at 25 °c. classify each solution as acidic, basic, or? are the following acidic, basic or nuetral? poh=3.37 poh=11.40 [h+]=3.8x10^-4 [h+]=5.8x10^-8 [oh-]=3.5x10^-12 [oh-]=6.6x10^-3 [h+]=1.0x10^-7 poh=7 ph=5.11 ph=12.94"

Answers: 2

Show answers

Answers

Answer from: Lydiaxqueen

1) pOH = 3.37 The solution is basic.

2) pOH = 11.40 The solution is acidic.

3) [H⁺] = 3.8 x 10⁻⁴ The solution is acidic.

4) [H⁺] = 5.8 x 10⁻⁸ The solution is basic.

5) [OH⁻] = 3.5 x 10⁻¹² The solution is acidic.

6) [OH⁻] = 6.6 x 10⁻³ The solution is basic.

7) [H⁺] = 1.0 x 10⁻⁷ The solution is neutral.

8) pOH = 7 The solution is neutral.

9) pH = 5.11 The solution is acidic.

10) pH=12.94 The solution is basic.

Explanation:

We can determine the nature of the solution, acidic, basic or neutral, from the value of the pH.

pH is a sclale from 0 to 14.

If pH < 7, the solution is acidic.If pH = 7, the solution is neutral.If pH > 7, the solution basic.

1) pOH = 3.37:

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 3.37 = 10.63.

∵ pH > 7.

∴ The solution is basic.

2) pOH = 11.40:

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 11.40 = 2.60.

∵ pH < 7.

∴ The solution is acidic.

3) [H⁺] = 3.8 x 10⁻⁴:

∵ pH = - log[H⁺].

[H⁺] = 3.8 x 10⁻⁴ M.

∴ pH = - log(3.8 x 10⁻⁴ M) = 3.42.

∵ pH < 7.

∴ The solution is acidic.

4) [H⁺] = 5.8 x 10⁻⁸:

∵ pH = - log[H⁺].

[H⁺] = 5.8 x 10⁻⁸ M.

∴ pH = - log(5.8 x 10⁻⁸ M) = 7.236.

∵ pH > 7.

∴ The solution is basic.

5) [OH⁻] = 3.5 x 10⁻¹²:

∵ pOH = - log[OH⁻].

[OH⁻] = 3.5 x 10⁻¹² M.

∴ pOH = - log(3.5 x 10⁻¹² M) = 11.46.

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 11.46 = 2.54.

∵ pH < 7.

∴ The solution is acidic.

6) [OH⁻] = 6.6 x 10⁻³:

∵ pOH = - log[OH⁻].

[OH⁻] = 6.6 x 10⁻³ M.

∴ pOH = - log(6.6 x 10⁻³ M) = 2.18.

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 2.18 = 11.82.

∵ pH > 7.

∴ The solution is basic.

7) [H⁺] = 1.0 x 10⁻⁷:

∵ pH = - log[H⁺].

[H⁺] = 1.0 x 10⁻⁷ M.

∴ pH = - log(1.0 x 10⁻⁷ M) = 7.0.

∵ pH = 7.

∴ The solution is neutral.

8) pOH = 7:

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 7.0 = 7.0.

∵ pH = 7.

∴ The solution is neutral.

9) pH = 5.11:

∵ pH < 7.

∴ The solution is acidic.

10) pH = 12.94:

∵ pH > 7.

∴ The solution is basic.

Answer from: Quest

Ais your answer to this

Answer from: Quest

i believe the answer is three water molecules

Another question on Chemistry

Chemistry, 21.06.2019 20:30

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

Answers: 1

Answer

Chemistry, 22.06.2019 05:20

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Answers: 1

Answer

Chemistry, 22.06.2019 15:00

Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o

Answers: 1

Answer

Chemistry, 23.06.2019 00:10

In as 1°, 2°, 3°, or 4°. be to . : °b: °c: °d: ° : °b: °c: °d: ° : °b: °c: °d: °e: °f: °g: °h: ° : °b: °c: °d: °e: °f: °g: °h: °i: °

Answers: 3

Answer

You know the right answer?

"each value below represents a different aqueous solution at 25 °c. classify each solution as acidic...