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2 years ago

Identify the precipitation reactions. drag the appropriate items to their respective bins.

Chemistry

2 answers:

ycow [4]2 years ago

8 0

The precipitation reactions :

2KBr + Pb(NO₃)₂ -----> PbBr₂ + 2KNO₃

Hg₂(C₂H₃O₂)₂ + 2NaI ----> Hg₂I₂ + 2NaC₂H₃O₂

Ba(NO₃)₂ + K₂SO₄ -----> BaSO₄ + 2KNO₃

<h3>Further explanation </h3>

There are two types of chemical reactions that may occur,

namely single-replacement reactions and double-replacement reactions.

1. A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

Not all of these reactions can occur. We can use the activity series, which is a list of elements that can replace other elements below / to the right of them in a single replacement reaction.

2. Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

To predict whether this reaction can occur or not is to see the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur

Solubility Rules:

1. soluble compound

All compounds of Li +, Na +, K +, Rb +, Cs +, and NH4 +

All compounds of NO₃⁻ and C₂H₃O₂⁻

Compounds of Cl−, Br−, I− except Ag⁺, Hg₂²⁺, Pb²⁺

Compounds of SO₄²⁻ except Hg₂²⁺, Pb²⁺, Sr²⁺, Ba²⁺

2. insoluble compounds

Compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ +

Compounds of OH− except Compounds of Li +, Na +, K +, Rb +, Cs +, NH₄⁺, Sr²⁺, and Ba²⁺

Let's look at possible reactions that are not shown in the question

1. S + O₂ ---> SO₂

SO₂ = gas so this reaction not the precipitation reactions

2. H₂O₂ + NaIO ---> NaI + H₂O + O₂

NaI = soluble so this reaction not the precipitation reactions

3. 2KBr + Pb(NO₃)₂ -----> PbBr₂ + 2KNO₃

PbBr₂ precipitates = so this reaction the precipitation reactions

4. HCl + KOH ----> KCl + H₂O

KCl soluble so this reaction not the precipitation reactions

5. HBr + KOH ----> KBr + H₂O

KBr soluble so this reaction not the precipitation reactions

6. Hg₂(C₂H₃O₂)₂ + 2NaI ----> Hg₂I₂ + 2NaC₂H₃O₂

Hg₂I₂ precipitates = so this reaction the precipitation reactions

7. Ba(NO₃)₂ + K₂SO₄ -----> BaSO₄ + 2KNO₃

BaSO₄ precipitates = so this reaction the precipitation reactions

<h3>Learn more</h3>

the rate of a chemical reaction

brainly.com/question/807610

the reducing agent

brainly.com/question/6966537

substance loses electrons in a chemical reaction

brainly.com/question/2278247

Keywords: a double-replacement equation, A single-replacement reaction

lana66690 [7]2 years ago

7 0

I can't fully answer this question because it is incomplete. In order for me to help you, I could just define what a precipitation reaction is and give a concrete example.

A precipitation reaction consists of two aqueous solutions that when reacted together, forms an insoluble salt. For example,

AgNO₃ (aq) + HCl (aq) --> AgCl (s) + HNO₃ (aq)

In this case, the precipitate is AgCl, Silver Chloride, which appears as a white solid.

You might be interested in

Which coefficients correctly balance the formula equation nh4no2(s)-> n2(g) + h2o(l)?

horrorfan [7]

NH4NO2 > N2 + 2 H2O

8 0

2 years ago

If the molecule could move upward without colliding with other molecules, then how high would it go before coming to rest? Give

tankabanditka [31]

The maximum height at which nitrogen molecule will go before coming to rest is 14 kilometers.

Given:

The nitrogen gas molecule with a temperature of 330 Kelvins is released from Earth's surface to travel upward.

To find:

The maximum height of a nitrogen molecule when released from the Earth's surface before coming to rest.

Solution:

The maximum height attained by nitrogen gas molecule = h
The temperature of nitrogen gas particle = T = 330 K

The average kinetic energy of the gas particles is given by:

$K.E=\frac{3}{2}K_bT\\\\K.E=\frac{3}{2}\times 1.38\times 10^{-23} J/K\times 330 K\\\\K.E=6.381\times 10^{-21} J$

The nitrogen molecule at its maximum height will have zero kinetic energy as all the kinetic energy will get converted into potential energy

The potential energy at height h = $P.E = 6.381\times 10^{-21} J$
Molar mass of nitrogen gas = 28.0134 g/mol
Mass of nitrogen gas molecule = m

$m= \frac{ 28.0134 g/mol}{6.022\times 10^{23} mol^{-1}}=4.652\times 10^{-23} g\\\\1g=0.001kg\\\\m=4.652\times 10^{-23}\times 0.001 kg\\\\=4.652\times 10^{-26} kg$

The acceleration due to gravity = g = 9.8 m/s^2
The maximum height attained by nitrogen gas molecule = h
The potential energy is given by:

$P.E=mgh$

$6.381\times 10^{-21} J=4.652\times 10^{-26} kg\times 9.8 m/s^2\times h\\\\h=\frac{6.381\times 10^{-21} J}{4.652\times 10^{-26} kg\times 9.8 m/s^2}\\\\h=13,996.6 m\\\\1 m = 0.001 km\\\\h=13,996.6 m=h=13,996.6\times 0.001 k m\\\\=13.9966 km \approx 14 km$