1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr_godi [17]
3 years ago
7

If the K a of a monoprotic weak acid is 1.0 × 10 − 6 , what is the [ H + ] of a 0.22 M solution of this acid?

Chemistry
1 answer:
prisoha [69]3 years ago
3 0

<u>Answer:</u> The concentration of hydrogen ions is 4.7\times 10^{-4}M

<u>Explanation:</u>

We are given:

Concentration of acid = 0.22 M

The chemical equation for the dissociation of monoprotic weak acid follows:

                       HA\rightleftharpoons H^++A^-

<u>Initial:</u>             0.22

<u>At eqllm:</u>       0.22-x    x     x

The expression of K_a for the above equation follows:

K_a=\frac{[H^+][A^-]}{[HA]}

We are given:

K_a=1.0\times 10^{-6}

Putting values in above equation, we get:

1.0\times 10^{-6}=\frac{x\times x}{(0.22-x)}\\\\x=-0.00047,0.00047

Neglecting the negative value of 'x', because concentration cannot be negative

So, equilibrium concentration of hydrogen ions = x = 0.00047 M = 4.7\times 10^{-4}M

Hence, the concentration of hydrogen ions is 4.7\times 10^{-4}M

You might be interested in
Here is my question only answer if you understand this question​
sasho [114]
1- false
2- true
3- true
4- false
5- true
6- false
7- true
8- true
9- true
10- false

Hope it helps :)
8 0
3 years ago
Diamond is an allotrope of :
Marat540 [252]

Answer:

carbon

Explanation:

because it is an allotrope of carbon

5 0
2 years ago
Read 2 more answers
Which of the following is a mixture?
Ne4ueva [31]
It’s water vapor, does this help?
4 0
3 years ago
When do acids follow the same naming conventions as other covalent componds
Valentin [98]
Jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjgccccccccccccccccccccc
3 0
3 years ago
calculate the concentration in parts per million (ppm) of DDT if a sample size of 2000 g contained 0.050 g DDT
Firlakuza [10]

Answer:

= 25 ppm

Explanation:

  • PPM also refers to parts per million, it represents a low concentration of a solution. It represents 0.001 gram or a milligram in a 1000 mL, which equivalent to 1 mg per liter.

Given; a sample size of 2000 g contained 0.050 g DDT

It means, 2000 mL sample contained 50 mg DDT

Therefore in ppm we get;

= 50 mg/ 2 L

= 25 mg/L

<u>= 25 ppm</u>

4 0
3 years ago
Other questions:
  • Water (2110 g ) is heated until it just begins to boil. if the water absorbs 551000. j of heat in the process, what was the init
    12·1 answer
  • The value of Kp for the reaction NO(g) 1 1 2 O2(g) 4 NO2(g) is 1.5 3 106 at 25°C. At equilibrium, what is the ratio of PNO2 to P
    15·1 answer
  • How many grams of CO2 are in 11 mol of the compound?
    12·1 answer
  • The darkest part of the moon’s shadow is called the penumbra?
    12·2 answers
  • A 73.6 g sample of aluminum is heated to 95.0°C and dropped into 100.0 g of water at 20.0°C. If the resulting temperature of the
    8·1 answer
  • When you mix copper sulphate solution and steel wool, what is the chemical property that can be observed.
    12·1 answer
  • How many molecules are present in a sample of carbon dioxide, CO2 with a mass of 168.2?
    10·1 answer
  • 1. Which is not an example of a physical change to a wooden stick?
    12·1 answer
  • The table shows the specific heat of four substances—brick, dry soil, paper, and water. If all four substances were exposed to s
    14·1 answer
  • In an aqueous solution, 42% of a substance dissociates to release hydronium ions. Which of the following statements is true for
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!