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
tino4ka555 [31]
3 years ago
9

The amount of calcium hydroxide needed to react completely with 100.0g of nitric acid

Chemistry
1 answer:
Pani-rosa [81]3 years ago
5 0

The amount of Calcium hydroxide : = 58.719 g

<h3>Further explanation</h3>

Given

100 g Nitric Acid-HNO₃

Required

The amount of Calcium hydroxide

Solution

Reaction(balanced) :

Ca(OH)₂ (s) + 2HNO₃ (aq) → Ca(NO₃)₂ (aq) + 2H₂O (l)

mol of Nitric acid (MW 63 g/mol) :

mol = mass : MW

mol = 100 : 63

mol = 1.587

From the equation, mol ratio of Ca(OH)₂ : HNO₃ = 1 : 2, so mol Ca(OH)₂ :

=1/2 x mol HNO₃

= 1/2 x 1.587

=0.7935

Mass of Ca(OH)₂ (MW=74 g/mol) :

= mol x MW

= 0.7935 x 74

= 58.719 g

You might be interested in
Which is true of an effective scientific model?
nata0808 [166]

Answer choices are:

A.It seldom needs refining because of its detailed accuracy.

B. It clearly depicts the particular set of characteristics being modeled.

C. It is an exact visual representation of the characteristics being modeled.


D. It is the same size and color as the scientific phenomena being demonstrated.

____________________________________________________________

Correct answer choice is:

B. It clearly depicts the particular set of characteristics being modeled.
____________________________________________________________

Explanation:

In science, a model is a depiction of an approach, an article or even a method or a scheme that is used to illustrate and interpret happenings that cannot be encountered directly. Models are fundamental to what explorers do, both in their investigation as well as when carrying their information.

7 0
3 years ago
Read 2 more answers
Consider the following reactions. (Note: (s) = solid, (l) = liquid, and (g) = gas.) ½H2(g) + ½I2(g) → HI(g), ΔH = +6.2 kcal/mole
BARSIC [14]
½H2(g) + ½I2(g) → HI(g) ΔH = +6.2 kcal/mol
or...
½H2(g) + ½I2(g) + 6,2kcal/mole → HI(g)
________
21.0 kcal/mole + C(s) + 2S(s) → CS2(l)
or...
C(s) + 2S(s) → CS2(l) ΔH = +2,1 kcal/mole
_________
ΔH > 0 ----------->>> ENDOTHERMIC REACTIONS
4 0
3 years ago
Read 2 more answers
Determine the pH of a 0.100 M solution of hypobromous acid, HBrO, at 298K.
statuscvo [17]

Answer:

The pH of the 0.100 M solution of hydobromous acid HBrO is 4.843

Explanation:

Here we have the reaction given as follows;

HBrO ⇄ H⁺ + BrO⁻¹

Therefore;

                   HBrO ⇄ H⁺ + BrO⁻¹

Initial concentration of HBrO = 0.100 M decomposes partly to form x moles of each of H⁺ and BrO⁻¹. That is

                               HBrO          ⇄ H⁺ + BrO⁻¹

Initial                        0.1                     0       0

Change                     -x                     +x     +x

Equilibrium           0.1 - x                   x        x

Hence;

Ka =  \frac{[H^+][BrO^{-1}]}{[HBrO]} =\frac{x \times x }{0.1 - x} = \frac{x^2}{0.1 -x} = 2.06 \times 10^{-9}

(0.1 - x) × 2.06×10⁻⁹ = x²

x² + 2.06×10⁻⁹·x - 0.1 = 0

Factorizing gives;

(x + 1.4354×10⁻⁵)(x - 1.4352×10⁻⁵) = 0

Therefore, x  = 1.4352×10⁻⁵ M or -1.4354×10⁻⁵ M

We take the positive value as x is the concentration of the ions in the solution;

From the above [H⁺] = 1.4352×10⁻⁵ M

pH = -log[H⁺]  = -log(1.4352×10⁻⁵) = 4.843

The pH of the 0.100 M solution of hydobromous acid HBrO at 298 K where the Ka = 2.06×10⁻⁹ = 4.843.

8 0
3 years ago
Which element is the least attracted in a chemical bond?
Ilya [14]
The answer is Nitrogen.
5 0
3 years ago
A sample of Neon and Helium gases at 298 K have a total pressure of 29 atm. If the partial pressure of He is 6 atm, what is the
Ivahew [28]
I just met a cowboy guy and
8 0
3 years ago
Other questions:
  • A solution consists of a solute and a solvent mixed together. for the solution in model 1 identify and provide the symbol for th
    14·2 answers
  • What is the pH of a 0.001M HNO3 solution
    10·1 answer
  • A student is asked to balance an equation by using the half-reaction method. He determines the two half reactions as shown below
    7·1 answer
  • Felix adds salt to the boiling water, what will he have in the pot?
    5·1 answer
  • earths water is mostly A saline B freshwater C freshground water D Fresh surface water PLZ DO NOT GUESS IM TAKING THIS FOR A SER
    5·1 answer
  • Molecular mass of CH3 OH =​
    14·1 answer
  • How does the earth give us what we call and night
    15·1 answer
  • Physical properties such as melting point, boiling point, and solubility are all dependent on the type of interparticle forces a
    6·1 answer
  • How many atoms of each element are in NaCI?<br><br><br> |___| sodium <br><br> |___| chlorine
    12·2 answers
  • Which two elements are found in significant amounts (1% or more) in both the Universe and the human body?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!