With what volume of 5.00 m hf will 4.72 g of calcium hydroxide react completely, according to the following reaction? 2hf + ca(oh)2 → caf2 + 2h2o
Solved
Show answers
More tips
- C Computers and Internet How to Reinstall Windows: A Detailed Guide for Beginners...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
- F Food and Cooking Лечо: вкусное и простое блюдо для любой кухни...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
Answers on questions: Chemistry
- C Chemistry How far will it have traveled after 8.1 seconds, assuming it starts from rest?...
- C Chemistry Consider a process that occurs at constant volume. The initial volume of gas is 4.50 L , the initial temperature of the gas is 27.0 °C , and the system is in equilibrium with an...
- C Chemistry The gas-phase reaction A + B C + D takes place isothermally at 300 K in a packed-bed reactor in which the feed is equal molar in A and B with CA0 = 0.1 mol/dm^3. The reaction is...
- C Chemistry Charged atom or particle...
- C Chemistry What element has the following electron configuration? 1s 22s 22p 63s 23p 64s 2...
- C Chemistry Could someone help me with this?...
- A Advanced Placement (AP) Please help!! Lots of points and Tommyinnit! Assume that the following code exists inside a method of the class MyClass, and that this code compiles without errors: int result =...
- M Mathematics A flagpole is at the top of a building. 400 ft from the base of the building, the angle of elevation of the top of the pole is 22° and the angle of elevation of the bottom of the...
- E English BEST ANSWER GETS MOST POINTS! Which of the following is the best summary of the text on this page? А The English word dollar originates from ancient Rome, and the English word money...
- M Mathematics For what value of f(x)=4 is? f (x) = {(-1, -12), (18, 8), (0, 4), (-14, 17)}...
Ответ:
The volume of 5.00 M HF that will react with 4.72 g of calcium hydroxide is 0.0256 L
calculation
2HF + Ca(OH)₂ → CaF₂ + 2H₂O
Step 1: find the moles of Ca(OH)₂
moles= mass÷ molar mass
from periodic table the molar mass of Ca(OH)₂ = 40 +( 16+1)₂= 74 g/mol
moles = 4.72 g÷ 74 g/mol =0.0638 moles
Step 2: use the moles ratio to determine the moles of Hf
from the equation above HF: Ca(OH)₂ is 2:1
therefore the moles of HF = 0.0638 moles x 2/1 =0.1276 moles
Step 3: find the volume of HF
volume=moles /molarity
molarity =5.00 M = 5.00 mol/L
=0.1276 moles / 5.00 mol/l =0.0256 L
Ответ: