answersLogoWhite

0


Best Answer
pH = pKa - log([HA]/[A])[HA] = concentration weak acid NH4+ and [A] = concentration of weak base NH3

Before HNO3 addition [HA]= 6.0 mmol NH4+ in 100 ml => after: [HA]= 6.0+5.3 mmol NH4+ in 101 ml

Before HNO3 addition [A]= 11.5 mmol NH3 in 100 ml => after: [HA]= 11.5-5.3 mmol NH3 in 101 ml

Thus: (notice that pH of buffer is independent from a large range of dilution)

pHbefore = 9.24- log10(6.0/100 / 11.5/100) = 9.24 - log10(6/11.5) = 9.52

and:

pHafter = 9.24 - log10(11.3/101 / 6.2/101) = 9.24 - log10(11.3/6.2) = 8.98

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Calculate the pH of 100 ml of a buffer that is 0.060 m NH4Cl and 0.115 m NH3 before and after the addition of 1 ml of 5.30 m HNO3?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the correct name for this compound NH4Cl?

The compound NH4Cl contains one ammonium ion for each chloride ion. Based on the naming rules for ionic compounds, this compound is simply ammonium chloride. Note that NH4 should not be confused with NH3, which is ammonia and is not an ion.


Why does metabolic acidosis causes hypochloremia?

More Cl- is being excreted as Nh4Cl to buffer the excess acid in the renal tubules, leaving less Cl- in the Extracellular Fluid


What is the ionic compound formula for ammonium chloride?

NH4Cl-------------ammonium chloride


NH4Cl non binary compound?

NH4Cl is not binary.


What is the compound for NH4Cl?

Ammonium chloride is an inorganic compound also called NH4Cl.


Is nh3 and nh4cl a buffer?

this is buffer system consisted of a weak base and its conjugated base. NH4OH is the weak acid and the NH4Cl is the conjugated base. when an acid or a base is added in small amount the change of the pH of this solution is neglegible hence we tells that this shows a resistivity when adding an acid or a base .when an acid is added OH ions reacts and form H2O and NH4OH dissociates and give the OH ions to the solution .When an base is added NH+ ions react with OH ions added and form NH4OH which dissociates weakly to NH+ ions and OH- ions .


What is the pH of 0.001 M NH4Cl?

- log(0.001 M NH4Cl) = 3 pH =====


What is the balanced chemical equation when NH4Cl is heated?

NH4Cl,sol --> NH3,gas + HCl,gas


What is the name for NH4Cl?

NH4Cl is ammonium chloride.


Is NH4Cl a strong electrolyte?

No. NH4Cl is a salt, though it is weakly acidic.


What typeS of bonding is in NH4CL?

the bond in NH4Cl is somewhat ionic because NH4 is positive and CL is negative


What is the chemical name for NH4Cl?

Ammonium Chloride! Hope this helps! :)