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13 Dec 2019

Which of the following would occur if solid NH4Cl was added to an aqueous solution of NH3?

a)The equalibrium constant changes.

b)The pH increases

c)NH3 will ionize to a greater extent

d)The pH decreases

What is the pH of a solution of 0.20 M HNO2 containing 0.10 M NaNO2 at 25

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Sixta Kovacek
Sixta KovacekLv2
17 Dec 2019

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Related questions

Which of the following would occur if solid nh4cl was added to an aqueous solution of nh3?

  1. The pH decreases.
  2. The equilibrium constant changes.
  3. The pH increases.
  4. NH3 will ionize to a greater extent.

Which of the following combinations would make a buffer with pH closest to 9.0?
Given:

HClO2   Ka = 1.1 × 10-2
NH3   Kb = 1.8 × 10-5
HNO2   Ka = 7.2 × 10-4
C5H5N   Kb = 1.5 × 10-9

Choices:

Equal volumes of 0.10 M HClO2 and 0.10 M NaClO2

Equal volumes of 0.10 M HCl and 0.10 M NaCl

Equal volumes of 0.10 M C5H5NHCl and 0.10 M C5H5N

Equal volumes of 0.10 M HNO2 and 0.10 M NaNO2

Equal volumes of 0.10 M NH4Cl and 0.10 M NH3

Hypothesize which mixtures you think will be able to resist changes in pH upon addition of either acid or base. (Check the appropriate box for each.

Mixture Won’t resist change in pH upon addition of acid or base Will resist change in pH upon addition of acid only Will resist change in pH upon addition of base only Will resist change in pH upon addition of acid and upon addition of base
A 0.10 M NaC2H3O2 solution A 0.10 M NaCl solution
A 0.10 M NaCl solution A solution that is 0.10 M HC2H3O2 and 0.10 M NaC2H3O2
One part 0.10 M NH3 mixed with one part 0.10 M NH4Cl
A solution that is 0.10 M NH3 and 0.20 M NH4Cl
Three parts 0.10 M NH3 mixed with one part 0.10 M HC
One part 0.10 M NaOH mixed with one part 0.10 M HCl
One part 0.10 M NaOH mixed with one part 0.10 M NH4Cl
One part 0.10 M NaOH mixed with two parts 0.10 M NH4Cl
DI water (just solvent)

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