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
MAXImum [283]
3 years ago
11

1.Complete the balanced neutralization equation for the reaction below:

Chemistry
1 answer:
Alexxx [7]3 years ago
5 0

1. H_{2}SO_{4} + Sr(OH)_{2} ⇒ SrSO4 + 2 H2O is the balanced reaction.

2. 0.034 liters of KI will be required  completely react with 2.43 g of Cu(NO3)2.

3. 0.55 liters is the volume in L of a 0.724 M Nal solution contains0.405 mol of NaI.

4. 33.3 ml  many mL of 0.300 M NaF would be required to make a 0.0400 M solution of NaF when diluted to 250.0 mL with water

Explanation:

Balance chemical reaction of neutralization:

1. H_{2}SO_{4} + Sr(OH)_{2} ⇒ SrSO4 + 2 H2O

2. Data given:

balance chemical reaction:

2Cu(NO₃)₂(aq) + 4KI(aq) → 2CuI(aq) + I₂(s) + 4KNO₃(aq)

molarity of KI = 0.209 M

mass of Cu(NO₃)₂ = 2.43 grams

number of moles of Cu(NO₃)₂ will be calculated as:

number of moles = \frac{mass}{atomic mass of 1 mole}

atomic mass of Cu(NO₃)₂ = 187.56 grams/mole

putting the values in the equation,

number of moles= \frac{2.43}{187.56}

                             = 0.0129 moles

2 moles of Cu(NO₃)₂ will react with 4 moles of KI

0.0129 moles will react with x moles of KI

\frac{4}{2} = \frac{x}{0.0129}

x = 0.0258

atomic mass of KI = 166.00 grams/mole

mass = 166.00 x 0.0258

        = 4.28 grams or ml is the final volume of KI

so molarity = \frac{number of moles}{volume in litres}

so molarity of KI is 0.0258 M, volume is 1 litre.

Using the formula

Minitial x Vinitial = M final Vfinal

V initial = \frac{M final Vfinal}{Minitial}

           = \frac{4.28 X 0.209}{0.0258}

            = 34.67 ml 0.034 liters of KI will be required.

3) Data given:

molarity of NaI = 0.724

number of moles of NaI =?

Volume in litres =?

formula used:

molarity = \frac{number of moles}{volume in liters}

volume in litres = \frac{0.405}{0.724}

                          = 0.55 liters is the volume

4) Data given:

Initial molarity = 0.3 M

initial volume = ?

final molarity = 0.04 M

final volume diluted by = 250 ml

formula used:

M initial X Vinitial = Mfinal X V final

putting the values in the equation:

Vinitial = \frac{0.04 X 250}{0.3}

            = 33.3 ml of 0.3 M solution will be required.

You might be interested in
The boiling process is considered to be____
Dmitry_Shevchenko [17]

your answer is <u>D</u><u>.</u><u> </u>physical change, because a new substance is not formed.

5 0
3 years ago
Write the Henderson-Hasselbalch equation for a solution of formic acid. Calculate the quotient [HCO2]/[HCO2H] at (a) pH 3.000; (
Elena L [17]

Answer:

a. 0.182

b. 1.009

c. 1.819

Explanation:

Henderson-Hasselbach equation is:

pH = pKa + log [salt / acid]

Let's replace the formula by the given values.

a. 3 = 3.74 + log [salt / acid]

3 - 3.74 = log [salt / acid]

-0.74 = log [salt / acid]

10⁻⁰'⁷⁴ = 0.182

b. 3.744 = 3.74 + log [salt / acid]

3.744 - 3.74 = log [salt / acid]

0.004 = log [salt / acid]

10⁰'⁰⁰⁴ = 1.009

c. 4 = 3.74 + log [salt / acid]

4 - 3.74 = log [salt / acid]

0.26 = log [salt / acid]

10⁰'²⁶ = 1.819

3 0
3 years ago
Please please help me please please help please please help me please please help please please
Tatiana [17]

Answer:

AU9NJ-BLVHV-TCLJS-54YTB

6 0
3 years ago
A phase diagram assumes ______ is kept constant. temperature volume pressure density
algol [13]

pressure......................................

6 0
3 years ago
Read 2 more answers
How does the concentration of reactants affect the rate <br>of Chemical reaction? explain in short​
Neporo4naja [7]
Higher concentration of reactants equals faster rate of reaction. Reactions occur when particles collide effectively, and by increasing the concentration of reactants, you increase the number of effective collisions, thereby making the reaction occur faster.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the molecularity of the following elementary reaction?
    10·1 answer
  • How can you tell isotopes apart?
    10·2 answers
  • An unknown compound has the empirical formula CH2O and a molecular mass of 180 amu. What is the molecular formula of the compoun
    13·1 answer
  • Quarks are thought to be the building blocks of protons. Which was most affected by the discovery of the quark?
    8·2 answers
  • The number used to measure distances outside of our solar system is a(n)
    6·1 answer
  • Complete the mechanism for the cleavage of the ether by adding any missing atoms, bonds, charges, nonbonding electrons, and curv
    11·1 answer
  • What is metal ? Where does it coke from ?
    6·2 answers
  • Explain why Cl, is an element and NOT a compound.
    14·2 answers
  • Show work: Convert 4.21g of K3PO4to atoms
    10·1 answer
  • Calculate the molality of a 5.51 M ethanol (C2H5OH) solution whose density is 0.9349 g/mL
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!