Question

In: Chemistry

1.Calculate the [H3O+] value of each aqueous solution. aspirin with [OH−]=1.4×10−11M. seawater with [OH−]=1.5×10−6M 2. To...

1.Calculate the [H3O+] value of each aqueous solution.

aspirin with [OH−]=1.4×10−11M.

seawater with [OH−]=1.5×10−6M

2. To calculate pH and use it as a measure of acidity.

What is the pH of an aqueous solution with [H3O+] = 4×10⁻¹³M ?

Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid.

What is the molar concentration of H3O+ in a cola that has a pH of 3.120?

Expert Solution

1. Kw = [H3O+][OH-]

[H3O+] = Kw/[OH-]

= 1*10^-14/1.4*10^-11 = 0.000714M

sea water

Kw = [H3O+][OH-]

[H3O+] = Kw/[OH-]

= 1*10^-14/1.5*10^-6 = 6.7*10^-9 M

2.

[H3O+] = 4×10⁻¹³M

PH = -log[H3O+]

= -log4*10^-13

= 12.3979

3.PH = 3.120

-log[H3O+] = pH

-log[H3O+] = 3.120

[H3O+] = 10^-3.12 = 0.0007585M = 7.6*10^-4 M >>>>answer

queen_honey_blossom answered 3 years ago

1) calculate the [OH-] of a solution having a [H3O+]=2.85x10-6M. 2) A solution is tested with...

1) calculate the [OH-] of a solution having a [H3O+]=2.85x10-6M. 2) A solution is tested with a series of indicatores. the solution turns blue when bromcresol green is added, it turns purple when bromcresol purple is added, and its colorless when phenolphthalein is added. what is the estimated pH of this solution? 3) how does a pH indicator work? provide an equilibrium equation to illustrate your answer.

1. Calculate [H3O+] in the following aqueous solution at 25 C: [OH−]=1.1×10−9 M. 2. Calculate [H3O+]...

1. Calculate [H3O+] in the following aqueous solution at 25 C: [OH−]=1.1×10−9 M. 2. Calculate [H3O+] in the following aqueous solution at 25 C: [OH−]=2.4×10−2 M . 3. Calculate [H3O+] in the following aqueous solution at 25 C: [OH−]=6.2×10−12 M then classify the solutions as acidic or basic.

Calculate the [H3O+] of each aqueous solution with the following [OH-]. 1) NaOH, 1.6x10^2 M. 2)...

Calculate the [H3O+] of each aqueous solution with the following [OH-]. 1) NaOH, 1.6x10^2 M. 2) milk of magnesia, 1.0x10^-5 M. 3) aspirin, 2.2x10^-11 M. 4) seawater, 2.5x10^-6 M.

Calculate the [OH−] of each aqueous solution with the following [H3O+]: 1)stomach acid, 5.0×10−2M. Express your...

Calculate the [OH−] of each aqueous solution with the following [H3O+]: 1)stomach acid, 5.0×10−2M. Express your answer using two significant figures. 2)urine, 3.0×10−6M. Express your answer using two significant figures. 3)orange juice, 1.6×10−4M. Express your answer using two significant figures. 4)bile, 6.0×10−9M.Express your answer using two significant figures.

calculate the value of [-OH] from the given [H3O+] in each solution and label the solution...

calculate the value of [-OH] from the given [H3O+] in each solution and label the solution as acidic or basic: a) [H3O+]=6.5×10 (negative 10 power)M b) " "=8.6×10 (negative 3rd power)M

Calculate the [H3O+] of each aqueous solution with the following [OH−] . Express your answer using...

Calculate the [H3O+] of each aqueous solution with the following [OH−] . Express your answer using two significant figures. 1.Vinegar, 1.2 x 10-11M, Express your answer using two significant figures. 2. Urine, 2.3x10-9 M, Express your answer using two significant figures. 3. Ammonia, 5.8×10−3 M, Express your answer using two significant figures. 4. NaOH, 4.0×10−2 M, Express your answer using two significant figures.

Calculate the [OH−] of each aqueous solution with the following [H3O+]: stomach acid, 2.0×10−2M Express your...

Calculate the [OH−] of each aqueous solution with the following [H3O+]: stomach acid, 2.0×10−2M Express your answer using two significant figures. urine, 7.0×10−6M Express your answer using two significant figures. orange juice, 2.2×10−4M Express your answer using two significant figures. bile, 6.0×10−9M Express your answer using two significant figures.

A. Calculate [H3O+] in the following aqueous solution at 25 ?C: [OH?]= 1.6×10?9 M . Express...

A. Calculate [H3O+] in the following aqueous solution at 25 ?C: [OH?]= 1.6×10?9 M . Express your answer using two significant figures. B. Calculate [H3O+] in the following aqueous solution at 25 ?C: [OH?]= 3.0×10?2 M . Express your answer using two significant figures. C. Calculate [H3O+] in the following aqueous solution at 25 ?C: [OH?]= 7.0×10?12 M . Express your answer using two significant figures.

Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq)...

Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25 °C. [H^+]= [ClO4^-]= [OH^-]= Is the solution acidic, basic or neutral?

2. Calculate [H3O+]total, [OH-]total, [H3O+]water, [OH-]water, the pH and the pOH for a 3.2 x 10-2...

2. Calculate [H3O+]total, [OH-]total, [H3O+]water, [OH-]water, the pH and the pOH for a 3.2 x 10-2 M aqueous solution of perchloric acid, HClO4. Compare your value for [H3O+]water in the perchloric acid solution with the value for [H3O+]water in pure water. Are they the same or different? If they are different, explain why they are different. 3. Calculate [H3O+]total, [OH-]total, [H3O+]water, [OH-]water, [Ca2+]total, the pH and the pOH for a 0.00025 M aqueous solution of calcium hydroxide, Ca(OH)2.