Chemistry College

1. determine the ph and percent ionization for a 0.0500 m hno2 solution. the ka for hno2 is 3.94 x 10-4 .

Answers

Answer 1

The 0.0500 M HNO2 solution has a pH of 1.81 and a 44.5% ionisation percentage.

What is pH and how is it determined?

A solution's acidity or basicity is determined by its pH. It is described as the solution's hydrogen ion concentration's negative logarithm. While lower pH values denote acidity and higher ones denote basicity, a pH of 7 is regarded as neutral.

Since HNO2 is a weak acid, the percent ionisation and pH of the solution can be determined using the acid dissociation constant (Ka) formula.

Ka = (H+)(NO2-)/(HNO2)

We can write: Ka = x2 /, where x is the concentration of H+ and NO2- and (0.0500-x) is the concentration of HNO2 (0.0500 - x)

The quadratic formula is used to solve for x, and the result is x = 0.0154 M

For these reasons, [H+] = [NO2-] = 0.0154 M and [HNO2] = 0.0346 M.

We apply the formula: to determine the % ionisation.

% ionisation is calculated as [H+]/[HNO2] x 100%, or (0.0154 / 0.0346) x 100, or 44.5%

We use the following formula to determine pH:

pH = -log(0.0154) = 1.81 where pH = -log(H+)

As a result, the 0.0500 M HNO2 solution has a pH of 1.81 and a 44.5% ionisation percentage.

Learn more about pH here:

brainly.com/question/15289741

#SPJ1

Related Questions

Other Questions
sato consulting services paid $1,500 to office supplies mart, inc., as payment on account for invoice 2235. this transaction would be recorded with which of the following entries? what might happen to legislative districts in texas following a federal census? Which compound inequality is equivalent to |ax-b|>c for all real numbers a, b, and c, where c>=0 waht is predator-prey dynamical system a 1 cm diameter sphere is charged to a potential of 3400 V. how much charge is on the sphere when the television production company that produced the csi television series used the csi name on two other series (csi: new york, and csi: miami) it relied on____to convince fans of the original show that the new shows would be equally well crafted. A bag contains different colored candies. There are 50 candies in the bag, 28 are red, 10 are blue, 8 are green and 4 are yellow. What is the probability of choosing one candy and getting a yellow or green? Fractions should always be in lowest terms. Find the slope and the y-intercept of the graph of the linear equation. y= -2x - 1 When young children are using speech that is spoken and directed toward themselves, this is calleda) egocentric speech.b) syntax.c) fast mapping.d) private speech. The following should be considered when assessing risk: (Select all that apply)a. The consequences of your actions.b. How will an adversary benefit from the indicator?c. Will something you do or say provide an indicator to the adversary.d. What's the effect on the mission?e. What's the cost of avoiding risk? modern communication harmed social skill of people why justify the statement which clause has been cited by presidents as the basis for the assertion of inherent powers Which two precautions can help prevent social engineering? (Choose two.) 1) Always require a user name and password to be configured 2) Keep your password securely under your keyboard 3) Escort all visitors 4) Do not allow any customers into the workplace 5) Always ask for the ID of unknown persons How do you do matrix multiplication in NumPy? The multiplicative inverse of a number is also called its _______________. the process by which co2 (and then carbon) is added to intermediate and deep-ocean water and the ocean bottom, through the involvement of photosynthetic organisms, is called the ______. A school nurse is notified that a school-age child has been newly diagnosed with pertussis. Which of the following actions should the school nurse take? (Select all that apply.)- Instruct the parent to keep the child at home until the coughing stage has passed.- Encourage family members to obtain prophylactic treatment.- Check the immunization status of the child's classmates is correct. 93. as part of our military team, the army focuses on what type of operations? How to convert 750ml to cups? which of the following statements about self-conscious emotions is true? multiple choice they are emotions that are present in humans and other animals. they include emotions like surprise, interest, joy, anger, sadness, fear, and disgust. they involve the emotional reactions of others when they are generated. these emotions appear in the first six months of the infant's development.