All categories

3 years ago

The reactants of two chemical reactions are shown.

Chemistry

2 answers:

Ludmilka [50]3 years ago

6 0

Answer:

Explanation:

The first step is to write the <u>whole reactions</u>:

A) $HCl~+~NaOH~->~H_2O~+~NaCl$

B) $Cu~+~AgNO_3~->~Cu(NO_3)_2~+~Ag$

In A) reaction we will have an <u>acid-base reaction</u> (double replacement reaction). In this reaction, the <u>oxidation number</u> is the same for all atoms on both sides of the reaction.

In B) the <u>oxidation number</u> of Cu will change from zero to +2 and the <u>oxidation number</u> of Ag will change from +1 to zero. So, the Cu will be <u>oxidized </u>and the Ag will <u>reduce</u>. So, if we have a redox reaction for B) the charge must be equal on both sides.

kozerog [31]3 years ago

3 0

Answer:

it is A

Explanation:

because the forward reation will give salt and water why the backward reaction will give base and acid

You might be interested in

What rule/principle States that electrons fill orbital from lowest energy to highest energy?

Flauer [41]

The aufbau principle, from the German Aufbauprinzip (building-up principle), also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

3 0

3 years ago

Read 2 more answers

a container holds 7.4 moles of gas hydrogen gas makes up 25% of the total moles in the container if the pressure is 1.24 atm wha

Tema [17]

This question is based on Dalton's Law of Partial Pressure which states that "the total pressure of a system of gas is equal to the sum of the pressure of each individual gas (partial pressure).

Now, Partial Pressure of a gas = (mole fraction) × (total pressure)

⇒ Partial Pressure of Hydrogen = $\frac{1}{4}$ × $\frac{1.24}{1}$

= 0.31 atm

Thus the Partial Pressure of Hydrogen in the container is 0.31 atm.

6 0

4 years ago

Compared to the charge of a proton, the charge of an electron has?

PolarNik [594]

The charge of an electron has a negative charge (-), while protons have a postivie (+) charge.

4 0

4 years ago

Measurements show that unknown x compound has the following composition:

Fudgin [204]

The empirical formula of the compound with the percent composition C 18.1%, H 2.27%, Cl 79.8% is C₂H₃Cl₃.

<h3>What is an empirical formula?</h3>

It is the minimum ratio between the elements that form a compound.

Step 1: Divide each percentage by the molar mass of the element.

C: 18.1/12.01 = 1.51

H: 2.27/1.01 = 2.25

Cl: 79.8/35.45 = 2.25

Step 2: Divide all the numbers by the smallest one.

C; 1.51/1.51 = 1

H: 2.25/1.51 ≈ 1.5

Cl: 2.25/1.51 ≈ 1.5

Step 3: Multiply all the numbers by 2 so all of them are whole.

C: 1 × 2 = 2

H: 1.5 × 2 = 3

Cl: 1.5 × 2 = 3

The empirical formula is C₂H₃Cl₃.

The empirical formula of the compound with the percent composition C 18.1%, H 2.27%, Cl 79.8% is C₂H₃Cl₃.

Learn more about empirical formula here: brainly.com/question/1603500

#SPJ1

7 0

2 years ago

Calculate the second volumes. <br> 7.03 Liters at 31 C and 111 Torr to STP

DIA [1.3K]

The second volume : V₂= 0.922 L

<h3> Further explanation </h3><h3>Given </h3>

7.03 Liters at 31 C and 111 Torr

Required

The second volume

Solution

T₁ = 31 + 273 = 304 K

P₁ = 111 torr = 0,146 atm

V₁ = 7.03 L

At STP :

P₂ = 1 atm

T₂ = 273 K

Use combine gas law :

P₁V₁/T₁ = P₂V₂/T₂

Input the value :

0.146 x 7.03 / 304 = 1 x V₂/273

V₂= 0.922 L

4 0

3 years ago