Asked Oct 17, 2019

A buffer solution contains 0.496 M KHSO3 and 0.314 M Na2SO3. Determine the pH change when 0.126 mol NaOH is added to 1.00 L of the buffer.

pH after addition − pH before addition = pH change = ____


Expert Answer

Step 1

A buffer solution refers to an aqueous solution that consists of a mixture containing a weak acid and its conjugate base. These solutions are used as a means by which the pH can be kept constant in a wide range of chemical reactions.

Step 2

The pH  can be defined as  the measure of the molar concentration of all the H+ which are present in the given aqueous solution. It  is also a measure of acidity or basicity of the given solution. 

Step 3

The given buffer is an acidic buffer.

As per ...

The pK for KHSO, is 7.172
[Na SO
pH 7.172+log

Image Transcriptionclose

[salt] pH-pK+lg [acid] The pK for KHSO, is 7.172 [Na SO pHpKlog [KHSO (0.314) '(0.496) pH 7.172+log -6.9734


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Physical Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add

Q: Q3  the pressure of H2 required to make the potential of  H2 electrode zero in 1M HCl solution at 29...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...


Q: 8.15 (a) Using Lewis symbols, diagram the reaction between mag nesium and oxygen atoms to give the i...

A: (a)The electronic configuration of magnesium is 1s22s22p63s2 and it h\as two outermost electrons . T...


Q: A solution contains 58.9 grams of nickel (I) nitrate in 350 mL of water. What is the new concentrati...

A: Molarity of the solution containing 58.9g of nickel (II) nitrate in 350L of water is 


Q: 2. A hydrate weighed 8.456 g before heating and after heating the anyhydrous compound weighed 5.725 ...

A: PART (1)Mass of the sample is 8.456g.Mass loss is 5.725g.Therefore,


Q: The electron affinity of oxygen is -141kj/mol, corresponding to the reaction  O(g)+e-—>O-(g) The ...

A: The reaction takes place according to the following steps


Q: Write an equation for the reaction of CH2=CHCH2CH3 with each of the following  reagents: a. Ozone, f...

A: (a) The reductive cleavage of an alkene takes place in the presence of O3 and Zn, H+ to produce alde...


Q: Sodium fluoride is added to many municipalwater supplies to reduce tooth decay. Calculate the pH of0...

A: NaF is a strong electrolyte so it will be 100% dissociated.  This anion is the ion of a weak acid, h...


Q: How many grams of sodium carbonate are needed to make 350 mL of a 0.5% (w/v)% concentration

A: GivenPercentage of the solution = 0.5% w/vVolume of the solution = 350ml


Q: The following reactions all have K > 1.1) C9H7O4- (aq) + HF (aq)  HC9H7O4 (aq) + F- (aq)2) CH3COO...

A: According to Lowry-Bronsted concept acids are proton donors and bases are proton acceptors.