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
Sedaia [141]
3 years ago
10

Write a net ionic equation for the reaction that occurs when excess hydroiodic acid and chromium(II) carbonate (s) are combined.

Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
6 0

Answer:

Net ionic equation: 2I⁻(aq) + Cr²⁺(aq) → CrI₂(s)

<h3>Explanation:</h3>
  • A chemical equation shows chemical symbols of compounds known as reactants and compounds known as products in a chemical reaction.
  • The chemical equation between hydroiodic acid and chromium (II) carbonate is given by;

2HI(aq) + CrCO₃(aq) → H₂CO₃(aq) + CrI₂(s)

  • The Ionic equation is an equation that shows all the ions involved in a chemical reaction.
  • In this case, the ionic equation is;

2H⁺ I⁻(aq)+ Cr²⁺ CO₃²⁻(aq) → 2H⁺ CO₃²⁻(aq) + CrI₂(s)

  • The net ionic equation is an equation showing only the ions that take part in the reactions. The ions that do not take part in the chemical reaction known as spectator ions are not shown when writing net ionic equations.
  • Spectator ions are those ions that do not change state after the chemical reaction has taken place. In this case, hydrogen ions and carbonate ions are spectator ions.
  • The net ionic equation is

2I⁻(aq) + Cr²⁺(aq) → CrI₂(s)

You might be interested in
Which of the following elements is the most metallic
Marysya12 [62]
We found cesium, strontium, aluminum, sulfur, chlorine, and fluorine on the periodic table. Cesium is the farthest left and the lowest, while fluorine is the farthest right and the highest, so we know they have the highest metallic character and the lowest metallic character, respectively.
7 0
3 years ago
Read 2 more answers
Freon−12 (CF2Cl2), widely used as a refrigerant and aerosol propellant, is a dangerous air pollutant. In the troposphere, it tra
nevsk [136]

Answer:

141g of CCl₄

Explanation:

First, we have to write the balanced equation.

CCl₄(g) + 2 HF(g) ⇄ CF₂Cl₂(g) + 2 HCl(g)

We can calculate how many moles of CF₂Cl₂ using the ideal gas equation.

V = 14.9 dm³ = 14.9 L

T = 21°C + 273.15 = 294.15 K

P = 1.48 atm

R = 0.08206 atm.L/mol.K

P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{1.48atm.14.9L}{0.08206\frac{atm.L}{mol.K}.294.15K }=0.914mol

We can use proportions to find the mass of CCl₄ required to obtain 0.914 moles of CF₂Cl₂. According to the balanced equation, 1 mol of CF₂Cl₂ is produced when 1 mol of CCl₄ reacts. And the molar mass of CCl₄ is 154 g/mol.

0.914molCF_{2}Cl_{2}.\frac{1molCCl_{4}}{1molCF_{2}Cl_{2}} .\frac{154gCCl_{4}}{1molCCl_{4}} =141gCCl_{4}

7 0
3 years ago
. percent iron in a mixture that is 52.2% Fe2O3​
AVprozaik [17]

Answer:

36.51%.

Explanation:

First find the percentage of iron in pure Fe2O3 using the  atomic masses of the elements:

=  (2 * 55.845) * 100 /  (2*55.845+ 3*15.999)

=  69.94 %.

So the percentage of iron in the mixture

=  52.2 * 0.6994

= 36.51 (answer).

8 0
3 years ago
A cylinder with a movable piston originally has a volume of 2805 mL and is filled with nitrogen to a pressure of 4.00
Sergio039 [100]

This problem is providing the initial volume and pressure of nitrogen in a piston-cylinder system and asks for the final pressure it will have when the volume increases. At the end, the answer turns out to be 2.90 atm.

<h3>Boyle's law</h3>

In chemistry, gas laws are used so as to understand the volume-pressure-temperature-moles behavior in ideal gases and relate different pairs of variables.

In this case, we focus on the Boyle's law as an inversely proportional relationship between both pressure and volume at constant both temperature and moles:

P_1V_1=P_2V_2

Thus, we solve for the final pressure by dividing both sides by V2:

P_2=\frac{P_1V_1}{V_2}

Hence, we plug in both the initial pressure and volume and final volume in order to calculate the final pressure:

P_2=\frac{2805mL*4.00atm}{3864mL}\\ \\P_2=2.90atm

Learn more about ideal gases: brainly.com/question/8711877

6 0
2 years ago
Read the temperatures shown to the nearest 0.5°C.<br> 40<br> Е<br> с<br> DONE<br> DONE
levacccp [35]

Answer: 37.0 °C , 42.5 °C

Explanation:

3 0
3 years ago
Other questions:
  • How molecules of N2 gas can be present in a 2.5 L flask at 50°C and 650 mmHg?
    7·1 answer
  • Is it true that Organisms need water, vitamins and minerals. But they do not need salt to function.
    5·1 answer
  • What was the significance of Thompson’s Plum Pudding model of the atom?
    8·1 answer
  • What properties are those that describe what happens when a substance reacts with another substance? catalyst properties chemica
    10·2 answers
  • What experiment did Robert Millikan do
    15·2 answers
  • Which part of the atmosphere is the highest layer in which planes fly
    15·2 answers
  • Necesito ayuda con esto no le entiendo nada
    13·1 answer
  • Ethanol, C2H5OH, reacts with phosphorus trichloride, PC13:
    6·1 answer
  • When does absorption occur in infrared spectroscopy
    6·1 answer
  • Explain why sodium chloride solution cannot be used as the electrolyte to produce
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!