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
Luba_88 [7]
3 years ago
12

a chemist reacts 150.0 grams of HCl with an excess of MnO2. if the following reaction occurs: MnO2+4HCl=MnCl2+2H2O+Cl2 how many

grams of mncl2 are formed
Chemistry
2 answers:
krok68 [10]3 years ago
4 0

Answer:

There are formed 98.05 g of MnCl₂

Explanation:

The reaction is this one:

MnO₂ + 4 HCl   →  MnCl₂ +  2 H₂O + Cl₂

First of all, determinate moles. Divide mass /molar mass

150 g / 36.45 g/m = 4.11 moles of HCl

Ratio between HCl and MnCl₂ is 4:1

4 moles of HCl produce 1 mol of Chloride

4.11 moles of HCl  'll produce (4.11 . 1)/ 4 =1.03 moles of chloride

Molar mass . Moles = Mass

Molar Mass MnCl₂ = 95.2 g/m

95.2 g/m  . 1.03 moles = 98.05 grams

Firdavs [7]3 years ago
3 0

Answer:

There are 129.4 grams of MnCl2 formed

Explanation:

Step 1: Data given

Mass of HCl = 150.0 grams

MnO2 = excess

Molar mass of HCl = 36.46 g/mol

Step 2: The balanced equation

MnO2+4HCl → MnCl2+2H2O+Cl2

Step 3: Calculate moles of HCl

Moles HCl = Mass HCl / molar mass HCl

Moles HCl = 150.0 grams / 36.46 g/mol

Moles HCl = 4.114 moles

Step 4: Calculate Moles of MnCl2

For 1 mol of MnO2 we need 4 moles of HCl to produce 1 mol of MnCl2, 2 moles of H2O and 1 mol Cl2

For 4.114 moles of HCl we'll have 4.114/4 = 1.0285 moles of MnCl2

Step 5: Calculate mass of MnCl2

Mass MnCl2 =moles MnCl2 * molar mass MnCl2

Mass MnCl2 = 1.0285 * 125.84 g/mol

Mass MnCl2 = 129.4 grams

There are 129.4 grams of MnCl2 formed

You might be interested in
How many electrons may be accommodated in the first three energy levels?
viktelen [127]
Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. Some points will be nice
3 0
2 years ago
Read 2 more answers
Enzymes are affected by both ph and
Musya8 [376]
A. temperature
Enzymes can be effected by many factors but they usually vary down to these two
5 0
2 years ago
Read 2 more answers
Will fluorine form an anion or a cation? Why?
Serggg [28]
Fluorine will always form an anion. That is because at its basic form, it is electronegative, which means that it attracts electrons who give it a negative charge. This is why it will form an anion.
7 0
3 years ago
The following reaction does not proceed to form a product: H2O + Au---> no reaction. Why is that?. . A. Gold has a higher act
Tresset [83]
I think the correct answer from the choices listed above is option B. The following reaction does not proceed to form a product: H2O + Au---> no reaction because gold has a lower activity than hydrogen and cannot replace it. Hope this answers the question.
3 0
3 years ago
Answering the easy questions first is
Setler79 [48]

Answer:

ddfdsfd

Explanation:

sdgh   hjrtj

8 0
2 years ago
Other questions:
  • Which of the following is not a catalyst? A. Nickel B. Platinum C. Enzymes D. Phosphorus
    11·2 answers
  • Is this sentence true or false ? hydrogen is considered to be a metal
    14·2 answers
  • The systematic names for water, ammonia, and methane are dihydrogen monoxide, H2O; trihydrogen nitride, NH3; and tetrahydrogen c
    7·1 answer
  • What do the elements of any given group in the periodic table have in common with each other?
    14·1 answer
  • The international treaty which provides operational rules on reducing greenhouse gas emissions is called:______
    9·1 answer
  • 5 moles of a monatomic gas has its pressure increased from 105 Pa to 1.5*105 Pa. This process occurs at a constant volume of 0.1
    7·1 answer
  • Why parafin oil use in melting
    7·1 answer
  • Which best describes a photon?
    14·1 answer
  • Why do smokers have a more difficult time getting rid of bronchitis
    6·2 answers
  • How many moles of LiCl will I have if I start off with .425 moles of CaC12?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!