A buffer solution is 0.439 M in CH3COOH and 0.311 M in CH3COONa . If K_a for CH2COOH is 1.8x10^-5, what is the pH of this
buffer solution?

Please no link answers!

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Answer 1

Answer:

whats CH3COOH please tell me so I can answer!


Related Questions

O
The ester functional group is symbolized as ||
R-C-R
True False

Answers

Answer:

False

The ester functional group is not symbolized as R-C-R

Explanation:

The general formula of ester functional group is RCOOR′ where R represents a hydrogen atom or aryl group or an alkyl group while R' represents the alkyl group or an aryl group

Hence, the given statement is false

You have 150.0 mL of a 0.415 M solution of Ce(NO₃)₄.

a) What mass (in grams) of Ce(NO₃)₄ would be required to make the solution?
B) What is the concentration of the nitrate ions in the solution ?

C) If the original solution was diluted to 350.0 mL, what would be the new concentration of the Ce(NO₃)₄ in the solution?

Answers

A. The mass (in grams) of Ce(NO₃)₄ that will be required to make the solution is 24.16 g

B. The concentration of the nitrate ions in the solution is 1.66 M

C. The new concentration of the Ce(NO₃)₄ solution is 0.178 M

We'll begin by calculating the number of mole of Ce(NO₃)₄ in the solution.

Molarity = 0.415 M

Volume = 150 mL = 150 /1000 = 0.15 L

Mole of Ce(NO₃)₄ =?

Mole = Molarity × Volume

Mole of Ce(NO₃)₄ = 0.415 × 0.15

Mole of Ce(NO₃)₄ = 0.06225 mole

A. Determination of the mass of Ce(NO₃)₄ required to make the solution.

Mole of Ce(NO₃)₄ = 0.06225 mole

Molar of Ce(NO₃)₄ = 140.12 + 4[14 + (16×3)]

= 140.12 + 4[14 + 48]

= 140.12 + 4[62]

= 140.12 + 248

= 388.12 g/mol

Mass of Ce(NO₃)₄ =?

Mass = mole × molar mass

Mass of Ce(NO₃)₄ = 0.06225 × 388.12

Mass of Ce(NO₃)₄ = 24.16 g

Therefore, 24.16 g of Ce(NO₃)₄ is required to make the solution.

B. Determination of the concentration of the nitrate ion, NO₃¯ in the solution.

In solution, Ce(NO₃)₄ will dissociate as follow:

Ce(NO₃)₄ (aq) —> Ce⁴⁺(aq) + 4NO₃¯(aq)

From the balanced equation above,

1 mole of Ce(NO₃)₄ contains 4 moles of NO₃¯

Therefore,

0.415 M solution of Ce(NO₃)₄ will contain = 0.415 × 4 = 1.66 M NO₃¯

Thus, 1.66 M of the nitrate ion, NO₃¯, is present in the solution.

C. Determination of the new concentration of the Ce(NO₃)₄ solution.

Volume of stock solution (V₁) = 150 mL

Molarity of stock solution (M₁) = 0.415 M

Volume of diluted solution (V₂) = 350 mL

Molarity of diluted solution (M₂) =?

M₁V₁ = M₂V₂

0.415 × 150 = M₂ × 350

62.25 = M₂ × 350

Divide both side by 350

M₂ = 62.25 / 350

M₂ = 0.178 M

Therefore, the new concentration of the Ce(NO₃)₄ solution is 0.178 M

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help MEEEEE!!!!!!!!!!! ​

Answers

Answer:

Equation

Mark as brainlist

Answer:

equation

Explanation:

chemical changes can be shown in an equation/reaction because you can see products and reactants.

Please give me brainliest

1. Rank each of the following in order of INCREASING atomic radius
a F, K, Br
b. Mg. Na, Cs
c. Os, Ni, Fe

2. Rank each of the following in order of DECREASING atomic radius

A. CI, Br, Ga
B. Ne, Rn, Pb
C. Ca, Rb, C

Answers

STARTING FROM SMALLEST TO BIGGEST
1 a. F , Br , k
b. Mg , Na , Cs
c. Ni , Fe , Os
Explanation: down the group , atomic radius increases . And across the group , atomic radius decreases . REFER PERIODIC TABLE TO SEE WHERE THE ELEMENTS ARE SITUATED


STARTING FROM BIGGEST TO SMALLEST
2 a. Ga , Br , Cl
b. Pb , Rn , Ne
c. Rb , Ca , C

Explanation: down the group , atomic radius increases . And across the group , atomic radius decreases . REFER PERIODIC TABLE TO SEE WHERE THE ELEMENTS ARE SITUATED

Hybridization
of Bromine in BrF5

Answers

Answer:

the hybridization of bromine in BrF5 is SP³d².

Explanation:

Because its forms five single bond &have one lone pair that consider as sigma. So total sigma bond is 6. Hence hybridisation is SP³d².

- What happens when a hydrogen atom absorbs a quantum of energy?

Answers

the hydrogen moves to an excited state and electrons will move to higher energy levels

What is the mass number for an atom of xenon containing 54 protons and 75 neutrons?

Answers

Answer:

Answer should 133

Explanation:

all you have to do is add the protons and neutrons

The mass number for an atom of xenon containing 54 protons and 75 neutrons is 129 amu.

What is an Atomic mass of an atom?

The Atomic mass of any atom may be defined as the mass of an atom that is togetherly constituted by protons and neurons in the nucleus of an atom. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number).

The mass number of Xenon is calculated by the following formula:

The Number of neutrons = Mass number - Atomic number.

where, number of neutrons = 75, and number of protons = 54.

75 = Mass number - 54 (number of protons = atomic number).

Mass number = 75 + 54 = 129 amu.

Therefore, the mass number for an atom of xenon containing 54 protons and 75 neutrons is 129 amu.

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how toxic is uranium

Answers

Answer:

Inhaling large concentrations of uranium can cause lung cancer from the exposure to alpha particles. Uranium is also a toxic chemical, meaning that ingestion of uranium can cause kidney damage from its chemical properties much sooner than its radioactive properties would cause cancers of the bone or liver.

Explanation:

Which location in the diagram above is the Northern Hemisphere experiencing winter?

Location A

Location B

Location C

Location D

Answers

Answer:

location b

Explanation:

Answer:

Location D

Explanation:

is true answer

How long does it take for a car driving at 10m/s to move 200m?
A.
0.05 seconds
B.
2 seconds
C.
20 seconds
D.
2000 seconds

Answers

C. 20s

Explain:
10=1
200=?
200/10=20

The time taken by the car driving at 10m/s to move 200m is 20 seconds. The speed of car is 10m/s. Thus option C is correct.

What is speed?

Speed is defined as a measurement of the length of time it takes for an object to travel a certain distance.

The SI unit of speed is m/s, and speed is defined as the ratio of distance to time.

A change in speed is an example of acceleration because it is a change in velocity. Acceleration could be for positive or negative. Deceleration is another name for negative acceleration.

There are four types of speed.

Uniform speedVariable speedAverage speedInstantaneous speed

Speed can be expressed as

Speed = Distance / Time

Given, Distance = 200 m

           Time = 10 m/s

Speed = 200m / 10m/s

           = 20 seconds

Thus, the time taken by the car driving at 10m/s to move 200m is 20 seconds. The speed of car is 10m/s. Thus option C is correct.

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How do we calculate how fast (speed) Earth is rotating on its arist
speed = distance / time
speed = distance x time
speed = time / distance

Answers



Speed= distance/ time

An unknown compound has the following chemical formula: NO_x
where x stands for a whole number.
Measurements also show that a certain sample of the unknown compound contains of oxygen and of nitrogen.
Write the complete chemical formula for the unknown compound.

Answers

Answer:

NO_x

Explanation:

you said it

Based on the activity series you created in part C, predict whether there would be a chemical
reaction or no reaction when the listed pairs of substances are combined.
BI U X
X Х.
Font Sizes
А -
А
EEE 를 들 들
Substances
Reaction or No
Reaction
I
magnesium and copper(1)
sulfate
iron and magnesium sulfate
copper and iron(III) nitrate
magnesium and hydrochloric
acid

Answers

Answer:

first one is no reaction and the rest are reaction

Explanation:

Can someone please help with this !!!!

Answers

i think it's less, more, more. correct me if i'm wrong

Convert 1.2 Mg into milligrams

Answers

Answer:

1200 milligrams

If a raptor's wingspan were 112 centimeters, how long
would its body have to be for it to have a body-to-
wingspan ratio of 0.45?

Answers

Answer:

162.4 cm

Explanation:

please give brainliest award

Scientists believe the Earth's inner core to be solid. This is probably due to extremes in:

pressure

depth

density

temperature

Previous

Answers

Pressure

Anything that is put under a large amount of pressure becomes compact because it is squished together

why are noble gases considered the most stable elements

Answers

Answer:

they have the maximum number of valence electrons their outer shell can hold.

Explanation:

An environmental chemist analyzed the effluent (the released waste material) from an industrial process known to produce the compounds carbon tetrachloride (CC14) and benzoic acid (HC7H5O2), a weak acid that has one acidic hydrogen atom per molecule. A sample of this effluent weighing 0.3518 g was shaken with water, and the resulting aqueous solution required 10.59 mL of 0.1546 M NaOH for neutralization. Calculate the mass percent of HC7H5O2 in the original sample.

Answers

The mass percent of benzoic acid in the sample is 55.5%.

The equation of the reaction is; HC7H5O2(aq) + NaOH(aq) ----> NaC7H5O2(aq) + H2O(l)

Number of moles of NaOH reacted = concentration × volume

Number of moles of NaOH reacted = 10.59/1000 L × 0.1546 M

Number of moles of NaOH reacted = 0.0016 moles of NaOH

Since the reaction is 1:1, 0.0016 moles of HC7H5O2 reacted also.

Hence, mass of HC7H5O2 = 0.0016 moles × 122 g/mol = 0.1952 g

Mass percent of HC7H5O2 in the original sample = 0.1952 g/ 0.3518 g × 100 = 55.5%

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Question 1 of 5
A specific nitrogen atom has 7 protons and 6 neutrons. If this is a neutral
atom, how many electrons does the atom have?
A. 7
B. 13
C. 14
D. 6
SUBMI

Answers

Answer:

A.7

Explanation:

because proton equals to electron in neutral

D. 6_________________________

the HCO3 -1 ion is called

Answers

Answer:

Isn't that the bicarbonate Ion?

Help me with this plz

Answers

Answer:

EVEN DOE IT TOO LATE, ITS B

Explanation:

The elements in group 10, period five. Equals what on the periodic table.

Answers

Answer:

Palladium

Explanation:

calculate the pH of the following
A.0.02mol/L HCI
B. 0.1 mol/L NaOH​

Answers

GIMME POINTSSSSSSSSSSSSSSSS

Answer:

A.

Explanation:

hope it helps

A 10.35 kg block of ice has a temperature of −22.3 °C. The block absorbs 4.696 x 10^6 J of heat. What is the final temperature of the liquid water?

Answers

Answer:

: A 10.35 kg block of ice has a temperature of - 22.3 degree C. The block absorbs 4.696 times 10^6 J of heat. What is the final temperature of the liquid water?

Previous question: A 10.35 kg block of ice has a temperature of - 22.3 degree C. The block absorbs 4.696 times 10^6 J of heat. What is the final temperature of the liquid water?

Previous question: A 10.35 kg block of ice has a temperature of - 22.3 degree C. The block absorbs 4.696 times 10^6 J of heat. What is the final temperature of the liquid water?

Previous question: A 10.35 kg block of ice has a temperature of - 22.3 degree C. The block absorbs 4.696 times 10^6 J of heat. What is the final temperature of the liquid water?

Previous question

Explanation:

Q13. Which of the following is a balanced chemical equation for the reaction between potassium carbonate soletion and hyelrochlori acid. 1​

Answers

Answer:

Below

Explanation:

2HCl + K2CO3 -> 2KCl + CO2 + H2O

Which is a strong base?

A. HCl
B. NaOH
C. NH3
D. H3CO3

Answers

Answer:

c

Explanation:

Answer:

B

Explanation:

characteristic of compounds​

Answers

Answer:

Characteristics of a compound

The properties of a compound are different from the properties of its constituents. Formation of a compound is generally accompanied by evolution of energy in the form of heat or light. A compound has a fixed melting point and boiling point. A compound is always homogeneous in nature.

What ideas do you have about why these ions are so important for life?

Answers

Answer:

i dont get it

Explanation:

im small brain and only in 5th grade

120 g of KI at 0 °C solution is

Answers

Answer:

i dont care to you

Explanation:

cause you are tuyo

solution is 9°5

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