What is the molarity of a solution made by adding 18.00 mL of 5.00 M sodium...

What is the molarity of a solution made by adding 18.00 mL of 5.00 M sodium acetate to 55.00 mL of water? I got 1.64 as the molarity but when i enter that answer it says it is wrong, so i must be doing something wrong. Can you help?

Expert Solution

total volume of the solution = 18.00 + 55.00

= 73.00 mL

the molarity of the solution after adding water = millimoles / total volume

= 18.00 x 5.00 / 73.00

= 1.23 M

molarity of the solution = 1.23 M

note : you just used dilution formula C1 V1 = C2 V2

5.00 x 18.00 = C2 x 55.00

C2 = 1.64 M

this value you have got . but you added watet to the solution . so you have to take V2 as total volume 18 + 55 = 73 mL. that is the reason it went wrong .

queen_honey_blossom answered 2 years ago

a)What is the pH of a solution prepared by adding 25.00 ml of 0.0993 M sodium...

a)What is the pH of a solution prepared by adding 25.00 ml of 0.0993 M sodium hydroxide to 30.00 mL of 0.0553 M acetic acid? There will be a reaction. What two major species remain and how much of each? b) What is the pH of 9.93x10^-8 M potassium hydroxide? c) What is the volume of 0.579 M sodium hydroxide required to reach the equivalence point of a titration of 10.0 mL of 5.00% (by mass) acetic acid? d) What...

What is the molarity of a sodium hydroxide solution if 25.0 ml of this solution reacts...

What is the molarity of a sodium hydroxide solution if 25.0 ml of this solution reacts exactly with 22.30 ml of 0.253 M sulfuric acid? Thanks!

Calculate the molarity of a solution made by adding 25.4 mL of concentrated hydrochloric acid (37.3...

Calculate the molarity of a solution made by adding 25.4 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 500 mL of solution. (It is important to add concentrated acid or base to water, rather than the other way, to minimize splashing and maximize safety.)

Calculate the molarity of a solution made by adding 39.2 mL of concentrated perchloric acid (70.5...

Calculate the molarity of a solution made by adding 39.2 mL of concentrated perchloric acid (70.5 % by mass, density 1.67 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 2000 mL of solution. (It is important to add concentrated acid or base to water, rather than the other way, to minimize splashing and maximize safety.) [ HClO4]= _____M

1. What is the ph of a solution made by adding 100g of sodium acetate to 500 ml of water?

1. What is the ph of a solution made by adding 100g of sodium acetate to 500 ml of water? 2. What is the PH of a solution that contains 0.1 moles of sodium hydrogen phosphate and 0.1 moles of sodium dihydrogen phosphate? 3. How many grams of sodium hydrogen phosphate and sodium dihydrogen phosphate are needed to make 200 ml of a 0.15M PH 6.80 buffer? 4. What is the PH when 10 ml of 0.1 M HCl...

1. Calculate [OH−] for a solution formed by adding 5.00 mL of 0.120 M KOH to...

1. Calculate [OH−] for a solution formed by adding 5.00 mL of 0.120 M KOH to 20.0 mL of 7.1×10−2 M Ca(OH)2. 2. Calculate pH for a solution formed by adding 5.00 mL of 0.120 M KOH to 20.0 mL of 7.1×10−2 M Ca(OH)2. 3. Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N+H2O⇌C5H5NH++OH− The pKb of pyridine...

A. What is the molarity of sodium ions in a solution prepared by mixing 202.1 ml of 0.63 M sodium phosphate with 239 ml of 1.31 M sodium sulfide. Enter to 2 decimal places.

A. What is the molarity of sodium ions in a solution prepared by mixing 202.1 ml of 0.63 M sodium phosphate with 239 ml of 1.31 M sodium sulfide. Enter to 2 decimal places.B. A 17.3 ml sample of a 1.49 M potassium chloride solution is mixed with 58.6 ml of a 1.34 M lead(II) nitrate solution and a precipitate forms. The solid is collected, dried, and found to have a mass of 0.5 g. What is the percent yield?...

Question

What is the molarity of a solution made by adding 18.00 mL of 5.00 M sodium...

Solutions

Expert Solution

Related Solutions