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4 years ago

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Chemistry

1 answer:

BigorU [14]4 years ago

5 0

Answer:

An Arrhenius acid is an acid that dissociates in water to release hydrogen ions.

for example,

HCl is an Arrhenius acid.

HCl +aq⇒ H⁺₍aq₎ +Cl⁻₍aq₎

Acids react with bases to produce salt and water.

Acids react with metals to liberate hydrogen gas and produce a salt.

Acids dissociate in water to form ionic solution that conduct electricity

The acids taste is sour.

Explanation:

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A solution of hydrochloric acid of unknown concentration was titrated with 0.10 M NaOH. If a 100.-mL sample of the HCl solution

madam [21]

Answer: The initial pH of the HCl solution is 3

Explanation:

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is HCl

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=1\\M_1=?M\\V_1=100mL\\n_2=1\\M_2=0.10M\\V_2=1mL$

Putting values in above equation, we get:

$1\times M_1\times 100=1\times 0.10\times 1\\\\M_1=\frac{1\times 0.10\times 1}{1\times 100}=10M$

1 mole of HCl produces 1 mole of $H^+$ ions and 1 mole of $Cl^-$ ions

To calculate the pH of the solution, we use the equation:

$pH=-\log[H^+]$

We are given:

$[H^+]=0.001M$

Putting values in above equation, we get:

$pH=-\log (0.001)\\\\pH=3$

Hence, the initial pH of the HCl solution is 3

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4 years ago

Why can metals be extracted using carbon

8090 [49]

If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.

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2 years ago

In an electrically neutral atom of any element, there are equal numbers of

Masteriza [31]

Answer:

B. electrons and protons.

Explanation:

In an electrically neutral atom of any element, there are equal number of protons and electrons in the atom.

Protons are the positively charged particles in an atom.

Electrons are the negatively charged particles within the atom.

When the number of protons and electrons are the same or equal, the atom is neutral.

But when there is an imbalance, an ion results.

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Explanation:o

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2 years ago

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siniylev [52]

Answer:

The repeating pattern of a mineral's particles form a solid called a crystal.

Explanation:

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