17 Answered Questions for the topic Analytical Chemistry

Analytical Chemistry Chemistry

10/04/21

How do you calculate Ka2 from Ka1?

My professor has a lot of questions where he would have equilibrium constant Ka1, but somehow there is a value for Ka2 even though there is no concentration for it.

06/20/21

Solutions of the following:

1. Find the number of 𝐾+ ions in 2.92 𝑔 of 𝐾3𝑃𝑂142. Find the number of 𝑃𝑏2+ ions in 3.4 π‘šπ‘œπ‘™ of 𝑃𝑏𝑆𝑂43. Convert the following 𝑝 βˆ’ π‘“π‘’π‘›π‘π‘‘π‘–π‘œπ‘›π‘  to molar concentrations:a. 𝑝𝐻 = 1.020b. 𝑝𝑂𝐻 = 5.72c. 𝑝𝑀𝑛 =... more
Analytical Chemistry

06/17/21

Finding pH ofd solution that NaOH is titrated with HCl

(a)Β Calculate the pH of the solution resulting when 25.0 ml of 0.100 M NaOH is titrated with 0.0, 10.0, 12.5, and 15.0 ml of 0.200 M HCl.(b) Use the pH values calculated in 6(a) above,... more
Analytical Chemistry Chemistry

06/10/21

According to this, calculate the concentration of lead (II) nitrate (331.2 g/mol) as molarity and g/L?

4. A solution of 25 mL Na2CO3 is neutralized with 22.4 mL of 0.1065 M HCl. In the another analysis, 50 mL of Na2CO3 solution is added to 25.0 mL of Pb(NO3)2 solution, and after the lead (II)... more
Analytical Chemistry Chemistry Buffer Solutions

02/01/21

PLEASE HELP ASAP!

calculate the PH of the solution when 0.5 g of NaOH is added to 200 ml of 0.1 M HCOOH(formic acid). It will be accepted that there is no change in the volume of solution when solid substance is... more
Analytical Chemistry Chemistry Chemical Engineering

01/20/21

PLEASE HELP ME OUT ASAP !

Calculate the pCl of the mixture of 100.0 mL of 0,0500 M NaCl with 40.0 mL 0.100 M AgNO3 . Take account of the precipitate occurs when the solutions are mixed. PLEASE WRITE THE SOLUTION WITH FULL... more
Analytical Chemistry Chemistry

01/20/21

PLEASE HELP ME OUT ASAP !

Calculate the pH of the solution when 0.50 g of NaOH is added to 200.0 mL of 0.100 M HCOOH (formic acid). it will be accepted there is no change in the volume of solution when solid substance is... more
Analytical Chemistry

01/07/21

How to make 1 mM and 100 mg/L solution of Salicylic acid

Analytical Chemistry Chemistry

12/27/20

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The precipitate of silver fosphate is obtained by mixing 35.0 mL of 0.428 M sodium fosphate (Na3PO4) and 15.0 mL of 0.167 M silver nitrate (AgNO3).a)How many grams of silver fosphate is obtained?b)... more
Analytical Chemistry Chemistry

12/26/20

HELP PLEASE ASAP

When 0.177 g of a sample containing organic substance is burned with oxygen gas, the carbondioxide realised is held in the solution of barium hydroxide. 0.5613 g of barium carbonate is formed.... more
Analytical Chemistry Gravimetric Analysis

12/13/20

gravimetric analysis

Calcium in tap water sample (0.20 L) was determined by precipitating the cation as CaC2O4. The precipitate then filtered, washed and ignited to form 0.1132g of CuO. Calculate the concentration of... more
Analytical Chemistry Chemistry

12/03/20

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The solubility-product constant for Ag2CrO4 is 1.2 Γ— 10-12. What is the silver ion concentration in a solution prepared by mixing 50.00 mL of 0.032 M AgNO3 with 50.00 mL of0.010 M Na2CrO40.250 M... more
Analytical Chemistry Chemistry

12/03/20

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Exactly 500.0 mL of a solution containing 316.2 ppm of Ba(NO3)2 is mixed with 150.0 mL of 0.047 M Al2(SO4)3 solution. (N: 14.0 ; O:16.0; S:32.0; Al:27; Ba:137 g/mol)What mass of solid BaSO4 is... more
Analytical Chemistry Chemistry

12/03/20

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Calculate the pH of the following solutions,0.0040 M benzoic acid (Ka= 6.28x10-5)prepared by adding 100 mL of 0.0500 M NaOH to 50 mL of 0.100 M HOCl (Ka= 3.0x10-8)0.012 M HClO4.please write the... more
Analytical Chemistry Chemistry

12/03/20

PLEASE HELP ASAP

Calculate the concentration of the solution that 40.0 mL of the 22% (w/w) NH3 (17,0 g/mol) solution with a density of 0.870 g/mL is diluted to 300 mL.PLEASE WRITE THE SOLUTION WITH STEPS
Analytical Chemistry Chemistry

12/03/20

Please Help ASAP

Iodine in a sample containing iodine and chlorine ion is converted to the iodate ion adding excess amount of bromine.-3H2O +3Br2 + I - <-----> 6Brβ€Ύ + IO3β€Ύ +6H+Then remaining bromine is... more
Analytical Chemistry Organic Chemistry

03/19/19

What can I do if I don't get a phase separation between my organic and water phases?

Solvent extraction in a separation funnel is a very common method in preparative organic chemistry. But sometimes you don't get a nice phase separation between the organic and the water phase.... more

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