Enough monoprotic acid is dissolved in water to generate, Ask an Expert

Academics

Enough monoprotic acid is dissolved in water to generate 0.0163 M solution. The pH of the resulting solution is 6.31. Calculate the Ka of the acid.

My attempt at a solution:
[H+]=10^(-6.31)=4.898*10^-7
[A-]=[H+]=4.898*10^-7
[HA]=0.0163-4.898*10^-7=0.0162995
Ka=((4.898*10^-7)(4.898*10^-7))/(0.0162995)
Ka=1.47*10^-11

apparently what I calculated for Ka is incorrect, the hint says that I treated the initial H+ concentration as 0, the initial 10^-7 M H+ from water is not negligible. If [H+] initial=10^-7 and [H+] final =4.9*10^-7 by how much does the concentration change? What does that say about how much A- was produced?

View complete question

Chemistry, Academics

Category:- Chemistry
Reference No.:- M9865078

Have any Question?Write your Review or question?

Related Questions in Chemistry

2 h2sg 3 o2g rarr 2 h2og 2 so2gusing standard enthalpies

2 H2S(g) + 3 O2(g) → 2 H2O(g) + 2 SO2(g) Using standard enthalpies of formation, calculate the standard enthalpy change for this reaction.

Suppose 1000 ml of an aqueous solution containing an

Suppose 100.0 mL of an aqueous solution containing an unknown monoprotic acid (called HA) is titrated with 0.150 M KOH. The titration requires 47.82 mL of the potassium hydroxide to reach the equivalence point. What is t ...

Consider the following reactiona gnbspnbspb grarrc

Consider the following reaction. A (g) + B (g) → C (g) + D (g) *In one experiment the concentration of A (g) was monitored in the presence of a large excess of B (g) ( [B] o = 0.750 M ) . Time (s) [A] (mol/L) 0.00 6.00 ...

Anbsp00500-molnbspsample of a nutrient substance is burned

A 0.0500-mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 × 10 2 g H 2 O. If the molar mass of this nutrient substance is 114 g/mol, what is the fuel value (in nutritional Cal) if the t ...

What wavelength of light nm is required to eject an

What wavelength of light (nm) is required to eject an electron with a speed of 2.0 x 10 6 m/s from a metal with a threshold energy of 3.4 x 10 -18 J?

Aqueous potassium phosphate was mixed with aqueous

Aqueous potassium phosphate was mixed with aqueous magnesium chloride, and a crystallized magnesium phosphate product was formed. Consider the other product and its phase, and then write the balanced molecular equation f ...

The earth receives radiation from the sun at the top of the

The Earth receives radiation from the Sun at the top of the atmosphere with a spectrum that resembles a blackbody emitter at a temperature of nearly 6000 K, although the temperature inside the Sun is about 15 million K. ...

Sodium sulfide 117 g reacts with hydrochloric acid 167 ml

Sodium sulfide (11.7 g) reacts with hydrochloric acid (16.7 ml, 12.0 M) to yield sodium chloride and hydrogen sulfide. What is the theoretical yield (g) of hydrogen sulfide?

Why would the fact that red blood cells are malformed cause

Why would the fact that red blood cells are malformed cause a problem with their ability to carry oxygen? How would this affect a person stricken with this disease?

How is vacuum filtration completing the purification of

How is vacuum filtration completing the purification of your sample? Where are the impurities at this point? For a recrystallization lab in organic chemistry

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Chemistry Expert