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3 years ago

Which pair of compounds represents one Arrhenius acid and one Arrhenius base?

Chemistry

2 answers:

svlad2 [7]3 years ago

5 0

Answer: 3) $HNO_3$ and $NaOH$

Explanation:

According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion.

$HNO_3\rightarrow H^++NO_3^-$

According to the Arrhenius concept, a base is a substance that ionizes in the water to give hydroxide ion.

$NaOH\rightarrow Na^++OH^-$

Thus $HNO_3$ is an arrhenius acid and $NaOH$ is an arrhenius base.

notka56 [123]3 years ago

5 0

Answer:

HNO3 AND NaOH

Explanation:

Arrhenius acids have H as the only plus ion solution and Arrhenius base contains OH negative is the only negative ions in aqueous solution

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On one side of the cycle, green plants take in carbon atoms from the air make them part of their______

alexandr402 [8]

The answer is Glucose - Sugar

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3 years ago

Define the following symbols that are encountered in rate equations: [A]0, t1/2 [A]t, k.

dezoksy [38]

[A]0= Initial concentration
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3 years ago

.Write a short paragraph describing how electronegativity and molecular shape determine the polarity of a molecule. In your para

Yakvenalex [24]

Answer:

See explanation

Explanation:

Electro negativity refers to the ability of an atom in a molecule to attract the shared pair of electrons of a bond closer to itself.

In a molecule, the polarity of bonds is determined by the relative electro negativity of the bonding atoms. If the difference in electro negativity between the atoms in a bond is significant, such a bond is polar in nature e.g H-Cl, H-Br, C-F, etc.

However, the occurrence of polar bonds in a molecule alone does not guarantee the polarity of the molecule. The polarity of a molecule also depends on the shape of the molecule since dipole moment is a vector quantity.

A molecule is polar when the resultant dipole moment which is determined by the shape of the molecule is non zero.

For instance, CO2 contains two polar C-O bonds but the molecule is non polar because the two dipole moments cancel out. Also, symmetrical molecules are nonpolar irrespective of the presence of polar bonds in the molecule.

3 0

3 years ago

Explain why it is necessary to balance chemical equations in terms of maintaining equilibrium. How can you tell when a chemical

LUCKY_DIMON [66]

Answer:

See explanation.

Explanation:

Hello,

In this case, we say that chemical reactions are governed by the law of conservation of mass, which states that matter cannot be neither created nor destroyed by transformed, for that reason, we need to balance chemical reactions in order to ensure all the atoms to be in the same quantity at both reactants and products.

Moreover, equilibrium is defined as such condition at which the concentration of both reactants and products stop changing over the time so they become constant as well as their null reaction rate.

A widely acknowledged reaction is the HABER one which consists on the synthesis of ammonia by using elemental nitrogen and hydrogen:

$N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)$

In such reaction, we have two nitrogens at both reatants and products and six hydrogens at at both reatants and products for us to obey the law of conservation of mass. Furthermore, as the time goes by, nitrogen reacts with hydrogen, nonetheless, they do not react indefinitely, they have a limit that is equilibrium, so their moles stop being consumed and remain unchanged as well as the produced moles of ammonia.

Best regards.

7 0

3 years ago

An ethylene gas torch requires 300 L of gas at 0.8 atm. What will be the pressure of the gas if ethylene is supplied by a 200.0

Vlad [161]

Answer:

1.2 atm

Explanation:

Given data

Volume of the gas in the tank (V₁): 200.0 L

Pressure of ethylene gas in the tank (P₁): ?

Volume of the gas in the torch (V₂): 300 L

Pressure of the gas in the torch (P₂): 0.8 atm

If we consider ethylene gas to be an ideal gas, we can find the pressure of ethylene gas in the tank using Boyle's law.

$P_1 \times V_1 = P_2 \times V_2\\P_1 = \frac{P_2 \times V_2}{V_1} = \frac{0.8atm \times 300L}{200.0L} = 1.2 atm$

3 0

3 years ago