1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zigmanuir [339]
2 years ago
8

What is the mass in grams of Al that were reacted with excess HCl if 2.12 L of hydrogen gas were collected at STP in the followi

ng reaction?
2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)
Chemistry
2 answers:
Inessa [10]2 years ago
8 0

4.176 g of Al that was reacted with excess HCl if 2.12 L of hydrogen gas were collected at STP in the following reaction.

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

Given data:

Volume of H_2 (g) = 5.20L

At STP

Pressure= 1 atm

Temperature =273K

R = 0.0821 L.atm/mol K

PV=nRT

n= \frac{PV}{RT}

n= \frac{1 atm X 5.20 L}{0.0821L.atm/mol K}

n= 0.2324 mol H_2

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

=0.2324 mol H_2 X \frac{2 mol Al}{3 mol H_2} X\frac{27 g Al}{1 mol Al}

=4.176 g of Al

Hence, 4.176 g of Al that were reacted with excess HCl if 2.12 L of hydrogen gas were collected at STP in the following reaction.

Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

irina [24]2 years ago
4 0

The mass of Al that reacted with excess to produce 2.12 L of Hydrogen gas at STP will be 1.7 gm

<h3>What is Limiting reagent ?</h3>

The limiting reagent  is the reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed.

We're asked to find the number of grams of Al that reacted with excess to produce 2.12 L of Hydrogen gas at STP

Balanced chemical equation for this reaction :

2Al(s) + 6HCl(aq) --> 2AlCl₃(aq) +3H₂(g)

From the above equation, Using Limiting reagent concept, we can conclude that 3 mole of Hydrogen gas i.e, 67.2 Ltr  (3 mole x 22.4 ltr) Hydrogen gas is produced by the consumption of 2 Al i.e, 54 gm (Mass = 2 mole x 27 g)

Therefore,

Mass of Al required to produce 2.12 ltr of Hydrogen gas  = 54/67.2 x 2.12 = 1.7 gm

Hence, the mass of Al that reacted with excess to produce 2.12 L of Hydrogen gas at STP will be 1.7 gm

9

Learn more about Limiting reagent here ;

brainly.com/question/20070272

#SPJ1

You might be interested in
What are easy ways to<br>Study Chemistry ??​
Elina [12.6K]

Answer:

seneca

past papers

take notes from videos

Explanation:

very good website, asks questions about the subject correct for your exam board and gives correct answers and explanations

exam papers always help

7 0
3 years ago
However, when the temperature increases, the solubility of gaseous solutes will _______?
babunello [35]

Answer:

Decrease

Explanation:

Since the speed in which the gas molecules are faster as they are heated, they fly around in the container and logically, it is harder to insert a moving object into water than something more stationary or slower.

7 0
3 years ago
`What would be the proper way to write the formula for an ionic compound containing carbon and oxygen?
harina [27]
D because Carbon and Oxygen form covalent compounds. I wasn't the greatest at chem., but I'm pretty sure this is correct :D let me know if I gave you the right answer.
6 0
3 years ago
The molarity of an aqueous sodium phosphate solution is 0.650 M. What is the molality of sodium ions present in this solution? T
netineya [11]

Answer:

molality of sodium ions is 1.473 m

Explanation:

Molarity is moles of solute per litre of solution

Molality is moles of solute per kg of solvent.

The volume of solution = 1 L

The mass of solution = volume X density = 1000mL X 1.43 = 1430 grams

The mass of solute = moles X molar mass of sodium phosphate = 0.65X164

mass of solute = 106.6 grams

the mass of solvent = 1430 - 106.6 = 1323.4 grams = 1.3234 Kg

the molality = \frac{moles of solute}{mass of solvent in kg}=\frac{0.65}{1.323}= 0.491m

Thus molality of sodium phosphate is 0.491 m

Each sodium phosphate of molecule will give three sodium ions.

Thus molality of sodium ions = 3 X 0.491 = 1.473 m

7 0
3 years ago
True or False? The following set of quantum numbers is acceptable (0, 0, 0, +1/2). Explain.
leonid [27]

Answer:

False

Explanation:

The values of the principal quantum number range from 1- infinity. This implies that there is no such thing as an energy level with n=0.

Hence this can not be an acceptable set of quantum numbers when n=0.

8 0
3 years ago
Other questions:
  • The following is known as the thermite reaction: 2Al(s)+Fe2O3(s)→Al2O3(s)+2Fe(s) This highly exothermic reaction is used for wel
    11·1 answer
  • You have 100ml of a 1.00M solution of Sodium Nitrate at 10 degrees C. Use tables T and G in your reference tables to determine i
    13·1 answer
  • _____ sedimentary rocks are made of once-living things or their pieces. A. Organic B. Inorganic C. Chemical D. Fragmental
    9·2 answers
  • At lunch, the babysitter gives Tanya and Damien each a chocolate candy. Tanya puts her candy on her plate. Damien saves his cand
    10·1 answer
  • What type of friction acts on a turning wheel or tire?
    8·1 answer
  • What is the most reactive metal on the periodic table?
    7·1 answer
  • How many atoms of phosphorus are in 4.50 mol of copper(ii) phosphate?
    9·2 answers
  • What happens to the average kinetic energy of the particles in a sample of matter as the temperature of the sample is increased?
    7·1 answer
  • Q3. A new pill (Wardine) has been created that reduces the side effects of the common cold! The
    12·1 answer
  • Which of the following is an example of a pure substance? *
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!