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2 years ago

What evidence do you see that a chemical reaction is taking place when you add hydrogen peroxide to potassium ioxide??

Chemistry

1 answer:

Yuri [45]2 years ago

3 0

Answer:

Bubbling/Foaming

Heat is produced

Explanation:

A chemical reaction has occurred if

1. There is a change in colour

2. Formation of a precipitate

3. Formation of a gas

4. Change in temperature

5. Change of smell

In the reaction of hydrogen peroxide and potassium iodide, the solution quickly rises which shows the formation of gas. This means it is a chemical reaction.

The beaker/test tube/whatever you used should also become warm because it is an exothermic reaction. This means its a chemical reaction

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A naoh (aq) stock solution was created by dissolving 3.88 g naoh in water to create a 100.00 ml solution. what is the concentrat

Bess [88]

0.0381g/mL will be concentration of this solution

The ratio of a solute—a substance that dissolves—to a solvent—a substance that does not dissolve—determines the concentration of a solution in chemistry. C = m/V, where C is the concentration, m is the mass of the solute dissolved, and V is the overall volume of the solution, is the accepted formula.

How to reach the solution?

First find for the density of NaOh which is 2.13 g/cm3

3.88 ÷ 2.13 = 1.82mL

100mL + 1.82mL = 101.82mL

3.88 ÷ 101.82mL = 0.0381g/mL

More about NaOh:

The extremely adaptable chemical sodium hydroxide (NaOH), sometimes referred to as caustic soda or lye, is employed in a range of manufacturing processes. A byproduct of the manufacturing of chlorine is sodium hydroxide. Numerous items that are used on a daily basis, including paper, metal, drain and oven cleansers for industry, soap, and detergents, are made with sodium hydroxide.

Learn more about Naoh here:

brainly.com/question/3366922

#SPJ4

5 0

1 year ago

Covalent compounds occur------

irga5000 [103]

Answer:

Only between nonmetals

Explanation:

Covalent compounds are compounds that are formed as a result of covalent bonding between nonmetal atoms.
Covalent compounds occur only between non metals, where atoms of the nonmetals involved join to form a covalent bond as a result of sharing of electrons.
<u><em>Electrons shared during the formation of covalent bond, may be from one atom involved or each atom contributing equally to the bond formation.</em></u>
An example of covalent compounds include, phosphorus (v) oxide, methane, water, CO2,etc.

4 0

2 years ago

(5.391 × 10−7) + (2.5531 × 10−6)

Alexeev081 [22]

Answer:

66.441

I hope this helps!

6 0

2 years ago

Read 2 more answers

What is the predominant intermolecular force in the liquid state of each of these compounds: water (H2O), carbon tetrabromide (C

Valentin [98]

Explanation:

Water -

It shows , Hydrogen bonding , Since ,

The molecule of water have a strong electronegative atom of oxygen and a hydrogen atom ,

So , the electronegative oxygen atom can interact with the other hydrogen atom of the other water molecule .

Carbon tetrabromide -

The molecule of Carbon tetrabromide have polar bonds of carbon and bromine atom , but overall the molecule is non - polar in nature , due to its tetraderal structure , hence ,

the molecule shows only dispersion forces .

dichloromethane -

The molecule of dichloromethane has Dipole Dipole forces due to difference in electronegativity between atoms .

8 0

3 years ago

In general, what is the relationship between temperature and the reaction rate of a chemical reaction? A. When temperature incre

riadik2000 [5.3K]

Answer:

A. When temperature increases, the number and energy of collisions between particles increases, which increases the rate of the reaction.

Explanation:

The reaction rate measures the speed with which a reaction proceeds. Based on the collision theory of reaction rates, the rate of a given reaction depends on the number of collisions per time and how successful or effective the collisions are.

Reaction rate in view of the collision theory is very related to concentration and temperature. Both properties are directly proportional to the rate of a reaction.

As temperature increase, the rate of the reaction increases due to the number of effective collisions and the energy of between colliding particles.

3 0

3 years ago