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Step2247 [10]
3 years ago
10

Consider the following generic reaction: A+2B→C+3D, with ΔH = 161 kJ . Determine the value of ΔH for each of the following relat

ed reactions.3A+6B→3C+9D
Chemistry
1 answer:
faltersainse [42]3 years ago
3 0

Answer:

ΔH=483 kJ

Explanation:

Its given that

For the reaction A+2B→C+3D has  ΔH = 161 kJ.

As the ΔH is positive this is an endothermic reaction where we supply energy.

It is given that we supposed to find ΔH for the following equation.

3A+6B→3C+9D    ΔH=?

So we observe that

3*(A+2B)→3*(C+3D)

So the whole reaction is rised with a coefficient of 3 hence the ΔH would be three times the original one.

ΔH=3*161 kJ

ΔH=483 kJ

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Calculate the molarity of a solution containing 9.25 mol H2SO4 in 2.75 L of solution.
Akimi4 [234]

Answer:

THE MOLARITY OF THE SOLUTION IS 3.36 MOLE/L

Explanation:

First we must understand what molarity is.

Molarity is the number of mole per unit volume of solution. In this question, 9.25 mole of H2SO4 was given in 2.75 L of solution.

Molarity is written in mole per dm3 or L.

So we can calculate the molarity:

9.25  ole of H2SO4 = 2.75 L of solution

The number of mole in 1 L of solution will be:

= 9.25 mole / 2.75 L

= 3.3636 mole/ L

In conclusion, the molarity of the solution is approximately 3.36 mole/L

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4 years ago
What are interactions between flip flops and sulfuric acid
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When the flip flops are used to walk on the ground the sulfuric acid from the ground overtime tends to wear down the bottom of the flip flops
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3 years ago
Consider the redox reaction below.
elixir [45]

Explanation:

                                         Fe²⁺   + 2e⁻  →   Fe

In a reduction half, the oxidizing agent is getting reduced. Such ion is donating electrons.

In a reduction process:

  • there is removal of oxygen from a specie
  • addition of hydrogen to a specie
  • gain of electron by an atom
  • decrease in oxidation number of an atom
  • decrease in number of electronegative atoms surrounding the element in changing from reactants to products.

Learn more:

Redox reactions brainly.com/question/2890416

#learnwithBrainly

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3 years ago
Which of these statements best describes the relationship between matter, pure substances, and mixtures? (2 points)
Elden [556K]

Answer:

Brainly operates a group of social learning networks for students and educators. Brainly inspires students to share and explore knowledge in a collaborative community and engage in peer-to-peer educational assistance, which is made available on www.brainly.com and any www.brainly.com sub-domains (the “Website”) as well as the Brainly.com mobile application (the “App”) (the “Website” and the “App” are collectively the “Brainly Services”).

Explanation:

4 0
3 years ago
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Using the solubility of Ca(IO3)2 that you determined in pure water, calculate the value of Ksp using only concentrations, that i
Aleks04 [339]

Answer:

4.6305 * 10^-6 mol^3.L^-3

Explanation:

Firstly, we write the value for the solubility of Ca(IO3)2 in pure water. This equals 0.0105mol/L.

We proceed to write the dissociation reaction equation for Ca(IO3)2

Ca(IO3)2(s) <——->Ca2+(aq) + 2IO3-(aq)

We set up an ICE table to calculate the Ksp. ICE stands for initial, change and equilibrium. Let the concentration of the Ca(IO3)2 be x. We write the values for the ICE table as follows:

Ca2+(aq). 2IO3-(aq)

I. 0. 0.

C. +x. +2x

E. x. 2x

The solubility product Ksp = [Ca2+][IO3-]^2

Ksp = x * (2x)^2

Ksp = 4x^3

Recall, the solubility value for Ca(IO3)2 in pure water is 0.0105mol/L

We substitute this value for x

Ksp = 4(0.0105)^2 = 4 * 0.000001157625 = 4.6305 * 10^-6

5 0
3 years ago
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