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
never [62]
3 years ago
12

Which statement is true about limiting reactants?

Chemistry
2 answers:
kvasek [131]3 years ago
4 0

Ans: B). The limiting reactant in a reaction is the first reactant to be completely converted to products.

In a chemical reaction, the limiting reagent is one with a lower number of moles. Thus, the limiting reactant will be consumed first and will dictate the amount of product that can be formed.

For example consider the reaction between 1 g of Mg and 2 g of O to form MgO

2Mg + O_{2} ---- 2MgO

# moles of Mg = \frac{mass of Mg}{atomic mass of Mg} = \frac{ 1 g}{24 g.mol-1} = 0.042 moles

# moles of Oxygen = \frac{mass of oxygen}{molar mass} = \frac{2}{32} =0.063 moles

since moles of Mg is less than that of oxygen, Mg will be the limiting reactant. Thus, it will be consumed first and will be completely converted into MgO.

Anna11 [10]3 years ago
3 0
B). The limiting reactant in a reaction is the first reactant to be completely converted to products.

Hope this helps you.
You might be interested in
Explain how temperature affects the rate of a reaction?​
levacccp [35]

Increasing the temperature a reaction takes place at increases the rate of reaction. At higher temperatures, particles can collide more often and with more energy, which makes the reaction take place more quickly. ... Both reactions release a gas and both finish at the same volume .

lol answer this question 3 times

4 0
3 years ago
Write the equation for the dissolution of sodium carbonate in water as found in your laboratory guide.
Arisa [49]
Na₂CO₃(s) → 2Na⁺(aq) + CO₃²⁻(aq)
The sodium carbonate formed from a strong base and a weak acid. Hydrolysis is subjected to the anion of a weak acid.

CO₃²⁻ + H₂O ⇄ HCO₃⁻ + OH⁻
HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻

pH>7 alkaline solution

2Na⁺ + CO₃²⁻ + 2H₂O ⇄ 2Na⁺ + 2OH⁻ + H₂CO₃
3 0
3 years ago
What happens when you heat iodine and ammonium chloride?
DiKsa [7]
Test tube of ammonium chloride (NH4Cl) being heated over a bunsen burner flame. Ammonium chloride decomposes readily when heated, but condenses in the cooler area at the top of the test tube. This is a reversible reaction, where the ammonium chloride decomposes into the gases ammonia (NH3) and hydrogen chloride (HCl).
5 0
3 years ago
Read 2 more answers
A 0.72-mol sample of PCl5 is put into a 1.00-L vessel and heated. At equilibrium, the vessel contains 0.40 mol of PCl3 (g) and 0
astra-53 [7]

Answer:

Equilibrium constant is 0.4

Explanation:

We propose the equilibrium:

                 PCl₅(g)    ⇄    PCl₃(g)   +    Cl₂(g)

Initially    0.72 mol

We have the 0.72 moles of the PCl₅.

React           x                      x                  x

X amount has reacted, so in the equilibrium we have:

               0.72 - x              0.4               0.4

If we initially have 0.72 moles and we have 0.4 moles at the equilibrium, it means that 0.3 moles has been reacted.

Let's make the expression for Kc:

Kc = [PCl₃] . [Cl₂] /  [PCl₅]

Kc =  0.4 . 0.4 / 0.4

Kc = 0.4

4 0
3 years ago
What is the SI unit of pressure and from what units is it derived
irga5000 [103]

The Pascal (symbol: Pa) is the SI derived unit of pressure. It is used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one Newton per square meter. It is named after the French polymath Blaise Pascal.

The Pascal (Pa) or kilo pascal (kPa) as a unit of pressure measurement is widely used throughout the world and has largely replaced the pounds per square inch.


5 0
4 years ago
Other questions:
  • Which equation describes a reduction?​
    6·1 answer
  • Which mixture can be classified as a homogeneous mixture
    14·2 answers
  • At a certain temperature, the solubility of n2 gas in water at 3.08 atm is 72.5 mg of n2 gas/100 g water . calculate the solubil
    12·1 answer
  • What happens when nitrogen fills its valence shell
    13·1 answer
  • Tides are caused when earthquakes occur under the ocean TRUE OR FALSE​
    10·2 answers
  • 6
    10·2 answers
  • Suggest reasons why scientists are interested in studying earth's layers.
    8·1 answer
  • Ch3-ch2-o-ch2-ch2-och3
    15·1 answer
  • How many moles (of molecules or formula units) are in each sample?
    9·1 answer
  • Please help balance <br> _Ch7H16+_O2=_CO2+_H2O
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!