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
Ierofanga [76]
3 years ago
6

A 1.018 g sample pure platinum metal was reacted with HCl to form 1.778 g of a compound containing only platinum and chlorine. D

etermine the empirical formula of this "Pt-Cl" Compound.
Chemistry
1 answer:
Ivanshal [37]3 years ago
3 0

Answer:

PtCl_4

Explanation:

Hello!

In this case, since HCl and Pt react according to the following chemical equation:

HCl+Pt\rightarrow PtCl_x+H_2

Whereas PtClx is the compound containing Pt and Cl; thus, since 1.018 g out of 1.778 g correspond to Pt and therefore 0.760 g to chlorine, so we determine the empirical formula of this compound by firstly computing the moles of each element:

n_{Pt}=1.018gPt*\frac{1molPt}{195.084gPt}=0.00522molPt\\\\\\n_{Cl}=0.760gCl*\frac{1molCl}{35.45gCl}  =0.0214molCl

Now, we divide the each moles by those of Pt as the fewest ones in order to compute their subscripts in the empirical formula:

Pt=\frac{0.00522}{0.00522}=1 \\\\Cl=\frac{0.0214}{0.00522} =4

Thus, the required formula is:

PtCl_4

Best regards!

You might be interested in
Enzymes are able to act on any molecules they come in contact with . True or false
Marrrta [24]

Answer:

Explanation:

True

7 0
3 years ago
Study this chemical reaction:
photoshop1234 [79]

Answer:

The oxidation reaction: Ni → Ni⁴⁺ + 4e.

The reduction reaction: 2Cl₂ + 4e → 4Cl⁻.

Explanation:

  • The mentioned reaction: <em>Ni + 2Cl₂ → NiCl₄.</em>
  • It is an oxidation-reduction reaction comes from two half reactions.

<em>The oxidation reaction:</em> in it Ni losses 4 electrons and is oxidized to Ni⁴⁺ according to the reaction:

<em>Ni → Ni⁴⁺ + 4e.</em>

<em></em>

<em>The reduction reaction: </em>every molecule of Cl₂ will gain 2 electrons and is reduced to 2Cl⁻ according to the reaction:

<em>2Cl₂ + 4e → 4Cl⁻.</em>

<em></em>

  • The summation of the two-half reactions will give the reaction:

<em>Ni + 2Cl₂ → NiCl₄.</em>

4 0
3 years ago
Where does energy go after it has been used?
Hoochie [10]
Energy is not created nor destroyed, therefore it is reused.
3 0
3 years ago
How to find the oxidation number of an element
Virty [35]
The thing you MUST do FIRST is look for any H's, O's, or F's in the equation

1)any element just by itself not in a compound, their oxidation number is 0
ex: H2's oxidation number is 0
ex: Ag: oxidation number is 0 if its just something like Ag + BLA = LALA

2) the oxidation number of H is always +1, unless its just by itself (see #1)
3) the oxidation number of O is always -2, unless its just by itself (see #1)
4) the oxidation number of F is always -1, unless its just by itself (see#1)


ok so after you have written those oxidation numbers in rules 1-4 over each H, F, or O atom in the compound, you can look at the elements that we havent talked about yet

for example::::
N2O4

the oxidation number of O is -2.

since there are 4 O's, the charge is -8. now remember that N2O4 has to be neutral so the N2 must have a charge of +8
+8 divided by 2 = +4

N has an oxidation number of +4.

more rules:
5) the sum of oxidation numbers in a compound add up to 0 (when multiplied by the subscripts!!!) (see above example)
6) the sum of oxidation numbers in a polyatomic ion is the charge (for example, PO4 has a charge of (-3) so

oxidation # of O = -2. (there are 4 O's = -8 charge on that side ) P must have an oxidation number of 5. (-8+5= -3), and -3 is the total charge of the polyatomic ion
3 0
3 years ago
What is a chemical reaction
UNO [17]

Answer:

A reaction in which the chemical properties get changed on addition of two or more compound s

5 0
3 years ago
Read 2 more answers
Other questions:
  • What liquids contain less than 80% percent water?
    7·2 answers
  • What is the magnitude of the dipole moment formed by separating a proton and an electron by 85 pm ?
    8·1 answer
  • Calculate the number of vacancies per cubic meter for some metal, M, at 773°C. The energy for vacancy formation is 0.97 eV/atom,
    10·1 answer
  • Calculate the energy required to ionize a ground state hydrogen atom. Report your answer in kilojoules. Socratic.Org
    15·1 answer
  • . If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1 liter of water = 55.5 moles of H2O), how
    14·1 answer
  • Suppose you have an aqueous solution containing 158.2 g KOHper
    11·1 answer
  • Electric charge<br> A. discovery b. Radiation c.electricity d. Kinetic energy
    6·1 answer
  • Which of the following 0.250 m solutions has the greatest freezing-point depression?
    9·1 answer
  • Study the reactions.
    9·1 answer
  • 1. The following results were obtained in analysis of iron ore for iron: 34.79%, 34.86%, 34.80%, 34.53% and 34.76% Calculate the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!