CHEMISTRY HIGH SCHOOL

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl)? *LiOH + KCl - LiCl + KOH

A) 64.5%
B) 88.6%
C) 81.5%
D) 92.8%

Answers

Answer 1
Answer:

Answer:

B) 88.6%

Explanation:

Percent yield equals actual yield divided by theoretical yield

actual yield is 31.0g

theoretical yield is 35g

percent yield was 88.57 which rounds up to 88.6%

Related Questions

Amines are derivatives of the ______ molecule.aldehyde ammonia acetone nitric acid
Which is something that a PURE SUBSTANCE and a SOLUTION have in common?A) They both are made of one kind of particle.B) They both are made of different kinds of particles.C) They both look speckled or chunky.D) They both look uniform (the same) throughout.
if you are finding the value of a 10 g piece of metal that has a value of 5 dollars/ 1 gram what would be my final unit
The heat of formation of Fe2O3(s) is –826.0 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 3O2(g) → 2Fe2 O3(s) when a 53.99-g sample of iron is reacted.
If salt is dissolved in water, water serves as the:a. solute.b. solvent.c. dissolved medium.d. none of the above

Can someone help plsCalculate the mass in grams of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

Answers

18.22 g of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

What is STP and how the amount of HCL came out to be 18.22 grams after the reaction?

  1. STP is standard temperature and pressure which is taken into account in the question to compare the value to standardized values.
  2. Here is given 5.6 L of hydrogen measured at STP reacting with an excess of chlorine gas.
  3. According to STP, T = 273 K , P= 1 atm , R = 0.0821L atm/K mol. The equation would be like: H2 + Cl2 = 2HCl .
  4. Now using ideal gas law , PV =nRT , n =PV/RT = 1 x 5.6L/0.0821Latm/K mol x 273 = 0.2498 mol.
  5. Now molar mass of HCl = 0.4996 x 36.485 = 18.22 g . Hence the amount of HCl produced would be 18.22 grams.

To know more about STP visit:

brainly.com/question/15469566

#SPJ13

The formula HCl stands for ____.a. hydrochloric acid
b. the hydronium ion
c. sodium hydroxide
d. hydrogen peroxide

Answers

HCl :

hydrochloric acid

answer A

hope this helps!

Fter a radioactive atom decays, it is the same element that it was before with no measurable change in mass. Which kind of decay has occurred, and how do you know?

Answers

After a radioactive atom decays, it is the same element that it was before with no measurable change in mass. the decay that is present is gamma decay because gamma decay has photons which has no mass unlike alpha and beta decay.

Answer:

D

Explanation:

on edge 2020

You have a stock bottle of HCl (aq) which is 12.1M, You need 400 mL of 0.10M HCl. How much of the acid and how much water will you need?

Answers

Mols of acid needed: 0.4 liters x 0.10 mol/liter = 0.04 mol

Volumen of acid in the bottle than contaiins 0.04 mol of acid: V = #moles/M = 0.04 mol/12.1 mol/liter = 0.003306 liters = 3.306 ml

Then you need 3.3 ml of acid from the bottle and 396.7 ml of pure water to get 400 ml of acid 0,1 M

Which statement about exothermic reactions is accurate? a.As reactants form products, the potential energy decreases.
b.As reactants form products, the potential energy increases.
c.Thermal energy is transferred from the product to the reacting substances.
d.Thermal energy is transferred from the surroundings to the reacting substances.

Answers

Option A. Exothermic reactions RELEASE energy, so the potential energy of the products will be less than the energy of the reactants.

Answer:

As reactants form products, the potential energy decreases.

Explanation:

Edge

Calculate the energy in joules and calories required to heat 25.0 g of water from 12.5C to 25.7C

Answers

the heat (Q) required to raise the temp of a substance is:Q=m∗Cp∗ΔT where m is the mass of the object (25.0g in this case), Cp is the specific heat capacity of the substance (for water Cp = 1.00cal/gC, or 4.18J/gC,
and Dt is the change in temp.
You'll have to solve this twice, once with the Cp in calories, and once with the Cp in joules.
1380.72 Joules
Other Questions
When a 1.0 M solution of HCl is titrated with a 1.0 M solution of KOH, which is the approximate pH at the equivalent point?
No one's even answering, so i'll just uh leave this here
What would be the mass of Iron(II) chloride obtained when 450g of Sodium Chloride is added to Iron(II) oxide?
Examples of chemical changes in nature