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
castortr0y [4]
2 years ago
13

Why does a reaction involving a catalyst finally stop

Chemistry
2 answers:
umka21 [38]2 years ago
8 0

Answer:

Explanation:

Catalysis is a process that accelerates chemical reactions due to molecules called catalysts, which provide ways to reach products that require less energy.

A catalyst intervenes in the reaction mechanism, but is not consumed. This means that the catalyst participates in some stage of the reaction, but then regenerates.

In addition, a catalyst is used in a small amount: a minimum mole percentage, with respect to reagents, is usually required to observe an increase in velocity.

There are three types of catalysis:

  • Homogeneous: the catalyst is present in the same phase as the species that react.
  • Heterogeneous: the catalyst and reagents are in a different phase.
  • Enzyme: occurs only in living beings, and in these cases the catalysts are enzymes.

The absence of a catalyst can make the reaction so slow that it never occurs. Therefore, when the catalyst of a reaction is removed, the reaction may stop.

elena55 [62]2 years ago
7 0
<span>When the catalyst is a reaction is removed by the reaction, this reaction will stop as there won't be any agent causing it anymore. !</span>
You might be interested in
What mass of H2O is produced by the combustion of 1.00 mol of CH4?
kkurt [141]
CH4 : H2O
1 : 2

number of moles of H2O = 1.00 x 2
number of moles of H2O = 2.00mol

mass = number of moles x molar mass

mass of H2O = 2.00 x (1 + 1 + 16)
mass of H2O = 36g
8 0
2 years ago
Sam buys a package of chips and notices that hydrogenated vegetables oil is one of the ingredients. This ingredient primarily:
Vladimir [108]
 Hydrogenated vegetable oil is a preservative, thus, the correct option is D. Hydrogenated vegetable oil are used by food industries to prevent fat rancidity in order to give their product a longer shelf life. Hydrogenated oils are very good preservatives because all the enzymatic activities in the oil has been neutralized during the hydrogenating process.
6 0
2 years ago
What is the definition of an atmosphere? a portion of the electromagnetic spectrum that makes the sky look blue the blanket of g
goldenfox [79]

Answer:

the blanket of gases that surrounds Earth and some other planets

Explanation:

The best definition of the atmosphere is that it is a portion of the earth that is a made up of a blanket of gases.

  • The atmosphere is not peculiar to the earth alone, some other planets also have atmospheric cover.
  • The earth's atmosphere is divided into many different layers.
  • The weather we see and experience on the earth surface is conditioned within the troposphere.
  • This troposphere is the closest layer to the surface.
7 0
2 years ago
A buffer solution is made that is 0.347 M in H2C2O4 and 0.347 M KHC2O4.
irga5000 [103]

Answer:

1. pH = 1.23.

2. H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Explanation:

Hello!

1. In this case, for the ionization of H2C2O4, we can write:

H_2C_2O_4\rightleftharpoons HC_2O_4^-+H^+

It means, that if it is forming a buffer solution with its conjugate base in the form of KHC2O4, we can compute the pH based on the Henderson-Hasselbach equation:

pH=pKa+log(\frac{[base]}{[acid]} )

Whereas the pKa is:

pKa=-log(Ka)=-log(5.90x10^{-2})=1.23

The concentration of the base is 0.347 M and the concentration of the acid is 0.347 M as well, as seen on the statement; thus, the pH is:

pH=1.23+log(\frac{0.347M}{0.347M} )\\\\pH=1.23+0\\\\pH=1.23

2. Now, since the addition of KOH directly consumes 0.070 moles of acid, we can compute the remaining moles as follows:

n_{acid}=0.347mol/L*1.00L=0.347mol\\\\n_{acid}^{remaining}=0.347mol-0.070mol=0.277mol

It means that the acid remains in excess yet more base is yielded due to the effect of the OH ions provided by the KOH; therefore, the undergone chemical reaction is:

H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Which is also shown in net ionic notation.

Best regards!

4 0
3 years ago
Plss help meeeeeeee i need help
Anastasy [175]

Answer:

D: dark cloud

E: elliptical galaxy

F: flare star

7 0
3 years ago
Other questions:
  • What is liquid nitrogen
    13·2 answers
  • Use complete sentences to differentiate between acids and bases on the basis of taste. Give an example of each type.
    11·2 answers
  • How many moles of co are contained in a 5.00 l tank at 155°c and 2.80 atm?
    9·1 answer
  • The reaction described in part a required 3.35 l of calcium chloride. what is the concentration of this calcium chloride solutio
    10·1 answer
  • Which type of emission has the highest penetrating power?
    11·1 answer
  • Which is a diatomic molecule?<br><br> Select one:<br> a. CH4<br> b. H2O<br> c. O2<br> d. N
    6·1 answer
  • The number of atoms present in 2.5 mole of triatomic gas is equivalent to ​
    12·1 answer
  • Calculate the number of atoms of argon in 75.0 L of argon at STP.<br> ?????
    8·1 answer
  • C. A 75 lb (34 kg) boy falls out of a tree from a height of 10 ft (3 m). (3 points)
    7·1 answer
  • If an object is in motion and experiences no others forces it will stay in
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!