Question

What is the molar mass of alum, AlK(SO4)2·12H20? please explain.

What is the molar mass of alum, AlK(SO4)2·12H20? please explain.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

molar mass of AlK(SO4)2.12H2O  = 474.3884 gm / mole

Explanation -

molar mass of molecule = sum of molar masses of element that present in molecule.

in the AlK(SO4)2.12H2O molecule all atom and molar mass of atom are given in the following table

Element molar mass no. of atom total molar mass
Al 26.9815386 1 26.9815386
K 39.0983 1 39.0983
H 1.00794 24 24.19056
O 15.9994 20 319.988
S 32.065 2 64.130
474.3884

sum of all molar masses = 473.3884 gm

therefore molar mass of AlK(SO4)2.12H2O  = 474.3884 gm / mole

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
7.Aluminum cans can be converted into alum [KAl(SO4)2 · 12 H2O] and hydrogen gas via a...
7.Aluminum cans can be converted into alum [KAl(SO4)2 · 12 H2O] and hydrogen gas via a very simple procedure summarized by the overall equation given below. Alum is a useful agent in water-proofing and hydrogen gas is a very useful fuel. An aluminum soda pop can with a mass of 19.56 g reacted with an excess of potassium hydroxide. What is the volume at STP of the hydrogen gas produced?
hint: the answers are not molar mass! please show your work and explain What is the...
hint: the answers are not molar mass! please show your work and explain What is the mass of a silicon dioxide molecule ? What is the mass of a dinitrogen tetrafluoride molecule ? What is the mass of a carbon tetrabromide molecule ?
Alum was synthesized in the same manner as described in this experiment. If the actual yield...
Alum was synthesized in the same manner as described in this experiment. If the actual yield of alum was 0.8675 g and the percent yield was 72.0%, what mass of aluminum was initially used? 2 Al(s) + 2 KOH(as) + 4 H2SO4(aq) + 22 H2O(l)  2 [KAl (SO4)2 ∙ 12 H2O](s) + 3 H2(g)
Data Table 1. Alum Data Object Mass (g) Aluminum Cup (Empty) 2.4 g Aluminum Cup +...
Data Table 1. Alum Data Object Mass (g) Aluminum Cup (Empty) 2.4 g Aluminum Cup + 2.0 grams of Alum 4.4 g Aluminum Cup + Alum After 1st Heating 3.6 g Aluminum Cup + Alum After 2nd Heating 3.4 g Mass of Released H2O 1.0 g Moles of Released H2O 18.006 g Not sure Questions: Calculate the moles of anhydrous (dry) KAl(SO4)2 that were present in the sample. Calculate the ratio of moles of H2O to moles of anhydrous KAl(SO4)2....
What happens when you add excess KOH to potassium alum? There are two equations: The first...
What happens when you add excess KOH to potassium alum? There are two equations: The first one: KAl(SO4)2 * 12H2O(aq) + 3KOH(aq) = Al(OH)2 (s) + 2K2SO4(aq) + 12H2O(l) What is the second equation? What is the equation for the solution turning cleae again? When I added KOH to the alum of the alum, the solution became white and cloudy. The more KOH I added, the more cloudy and dense looking it became. However, after a certain amount of drops,...
1. Aluminum potassium sulfate, or potash alum, KAI(SO​4)​​2 ​. 12 H2​O, is used as an antisepsis...
1. Aluminum potassium sulfate, or potash alum, KAI(SO​4)​​2 ​. 12 H2​O, is used as an antisepsis in various food preparation processes and as a flocculant for water purification. Potash alum has a molar mass of 474.39 g/mol, it disolves readily in aqueous solution to produce potassium, aluminum, and sulfate ions. A. A solution was prepared by dissolving 1.27 g of potah alum in enough water to make a 225 mL solution (Solution I). Calculate the molarity of potash alum in...
2 A(s) + B ------> C + 2 D Use 44 grams/mole as the molar mass...
2 A(s) + B ------> C + 2 D Use 44 grams/mole as the molar mass of D and 36 grams/mole as the molar mass of A and 58 grams/mole as the molar mass of B. If 27 mL of 6.0 M B is needed to react with all of the A, how many grams of D is formed? What mass of A reacted? What is the Molarity of A if 21.4 mL of 0.355M B is required to neutralize...
2 A(s) + B ------> C + 2 D Use 44 grams/mole as the molar mass...
2 A(s) + B ------> C + 2 D Use 44 grams/mole as the molar mass of D and 36 grams/mole as the molar mass of A and 58 grams/mole as the molar mass of B. If 27 mL of 6.0 M B is needed to react with all of the A, how many grams of D is formed? What mass of A reacted? What is the Molarity of A if 21.4 mL of 0.355M B is required to neutralize...
Al(s) + H2SO4(aq) --> Al2(SO4)3(aq) + H2(g) Consider the unbalanced equation above. What volume of 0.465...
Al(s) + H2SO4(aq) --> Al2(SO4)3(aq) + H2(g) Consider the unbalanced equation above. What volume of 0.465 M H2SO4 is needed to react with excess aluminum to produce 3.94 g of Al2(SO4)3? Use a molar mass with at least as many significant figures as the data given.
PLEASE SHOW ALL WORK Determine the molar mass of a solute if enough of it is...
PLEASE SHOW ALL WORK Determine the molar mass of a solute if enough of it is added to 20 grams of benzene so that the total mass of the mixture is 22.5 grams and the freezing point is 3.5 degrees celcius. Assume that the solute dissolves without dioociating into smaller pieces.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT