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
Ahat [919]
3 years ago
11

Identity each of the following catalysts as

Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
7 0

Answer:

Platinum is a Heterogeneous catalyst  

Explanation:

Catalyst are substance that speed up the rate of a chemical reaction . Catalyst increases the rate of a chemical reaction by lowering it activation energy. During the reaction, the catalyst are not consumed. In other words, catalyst does not change in amount as it does not go into the reaction.

Catalyst can be homogeneous or heterogeneous . A homogeneous catalyst is one which phase(liquid or gas) is same as the reactant phase. Heterogeneous catalyst are catalyst which phase(solid) is different from the reactants phase.      

From the reaction above

2H2O(aq)    Pt(s)→    2H2O(l) + O2(g)

Platinum is at the solid phase which is a different phase from the reactant(Hydrogen peroxide) which is Aqueous.

Since platinum is of a different phase , it is a heterogeneous catalyst.  

slamgirl [31]3 years ago
5 0

Answer:

Heterogeneous

Explanation:

The catalyst, Pt, is not in the same phase as the reactants, i.e. it is solid, whilst the hydrogen peroxide is aqueous.

You might be interested in
Given the following equation, how many grams of PbCO3 will dissolve when exactly 1.0 L of 1.00 M H+ is added to 6.00 g of PbCO3?
9966 [12]
Calculating for the moles of H+
1.0 L x (1.00 mole / 1 L ) = 1 mole H+

From the given balanced equation, we can use the stoichiometric ratio to solve for the moles of PbCO3:
1 mole H+ x (1 mole PbCO3 / 2 moles H+) = 0.5 moles PbCO3

Converting the moles of PbCO3 to grams using the molecular weight of PbCO3
0.5 moles PbCO3 x (267 g PbCO3 / 1 mole PbCO3) = 84.5 g PbCO3
4 0
2 years ago
Read 2 more answers
The same chemistry student has a weight of 155lbs what is the student weight in grams
Brrunno [24]

the answer is 70306.8 grams

6 0
3 years ago
Read 2 more answers
Describes how Anders Celsius devised the temperature scale that bears his name
shusha [124]
He used a tube of mercury and marked the height of the mercury when placed in an ice bath as 0 degrees celsius, when he placed the tube in a boiling, he marked the height of mercury and called that 100 degrees celsius, he marked it linearly between 0-100 degrees celsius
3 0
3 years ago
A chemist mixes sodium with water and witnesses a violent reaction between the metal and water. this is best classified as
Tema [17]

A law is statement about an observed concept. A theory involves the explanation of scientific concepts or principles. A hypothesis is the predicted explanation about some concepts that has to be tested in order to prove it to be right. An observation is the observing the results of a scientific experiment carried out to test an hypothesis.

Here the given statement 'A chemist mixes sodium with water and witnesses a violent reaction between the metal and water,' can be classified as an observation as it explains what the chemists observes as a result of his chemical experiment or test..

8 0
3 years ago
Which of the following statements are true about elements and compounds?
Leto [7]
The answer is d hope this helps
3 0
3 years ago
Other questions:
  • Benzene is an organic chemical compound with the molecular formula C6H6. In the benzene molecule, carbon atoms form a ring with
    13·1 answer
  • How close does Venus get to earth
    6·1 answer
  • Sulfuric acid (H2SO4) reacts with potassium hydroxide (KOH) as follows. H2SO4(aq) + 2 KOH(aq) K2SO4(aq) + 2 H2O(l) Calculate the
    6·1 answer
  • How to identify the number of protons neutrons and electrons and mass number?
    6·1 answer
  • I have a mixture of rocks,
    7·2 answers
  • Water molecules are ____________ because the hydrogen atoms are positively charged on one end and the oxygen atoms are negativel
    11·1 answer
  • The dipole moment (μ) of HBr (a polar covalent molecule) is 0.838D (debye), and its percent ionic character is 12.4 % . Estimate
    12·2 answers
  • I WILL GIVE BRAINLY IF U HELP ME WITH THIS LITTLE PASSAGE
    14·1 answer
  • Define mass number
    12·1 answer
  • Which of the following best defines valence electrons?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!