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Acids and Bases

An acid is any substance whose aqueous solution is characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals to form salts. A Base is any substance whose aqueous solution is characterized by a bitter taste, a slippery feel, the ability to turn red litmus blue, and the ability to react with acids to form salts. Questions about the acidity and alkalinity of solutions and different types of acids and bases are found n our Acids and Bases category.

500 Questions

What color is HCl?

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HCl is a colourless gas, with pungent odour.

When dissolved in water to form hydrochloric acid , it remains colourless.

What cancels out acids?

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to cancel an acid you need to add a base (alkaline) and vice versa.

so for example of this you take vinegar (an acid) and add baking soda (an alkaline) you'll get a chemical reaction releasing gas (in this case CO2) and what your left with is a mixture of water and salt.

When acid reacts with a base does it create salt and water?

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YES!!!

Here are the general acid reactions.

Acid + Base = Salt + Water

Acid + Alkali - Salt + Water

Acid + metal = Salt + Hydrogen

Acid + Carbonate = Salt + Water + Carbon Dioxide.

Here are some examples

2HCl + Na2O = 2NaCl + H2O

HNO3 + KOH = KNO3 + H2O

H2SO4 + Zn = ZnSO4 + H2

2CH3COOH + CaCO3 = Ca(CH3COO)2 + H2O + CO2

What is the word equation for hydrochloric acid zinc?

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HCL + Zn --> ZnCl + H2 (Displacement reaction)

How do you calculate 1m h2so4?

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Use the equation

Moles(m) = mass(g) / Mr (Relative Molecular Mass).

To calculate the Mr , refer to the Periodic Table, for Atomic Masses.

For H2SO4

We have

H x 2 = 1 x 2 = 2 ( 1 is the atomic mass of H )

S x 1 = 32 x 1 = 32 ( 32 is the atomic mass of S).

O x 4 = 16 x 4 = 64 (16 is the atomic mass of O).

Adding

2 + 32 + 64 = 98 the Mr of H2SO4

Substituting into the eq'n above

1 mole = mass(g) / 98

Algebraic rearrangement

mass(g) = 1 mole X 98(Mr)

mass(g) = 98 grams. is the mass of 1 mole of H2SO4 .

What is the meaning of amino acid?

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An Amino acid is an organic molecule with an amino functional group at one end of the molecule and a carboxylic acid function group at the other end.

Here is the structure of one such molecule.

H2N - CH2 - C(=O)-OH

Two of these molecules react together. The acid functional group react with the basic (amino) functional group to form a peptide link and extend the molecular chain . e.g.

H2N - CH2 - **C(=O)- N(-H)-**CH2 - COOH

The bit hi-lighted is the peptide link.

Is HCHO2 an acid?

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YES!!! HCOOH (Note the method of writing the formula), is Methanoic (Formic) Acid.

To neutralize a vinegar solution could you use phosphoric acid or sulfuric acid?

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Neither acid, because of the common ion effect.

By adding H2SO4 and/or H3PO4 to CH3COOH )Vinegar) you are just increasing the 'H^(+)' ions; the common ion.

To neutralise vinegar sol'n use sodium carbonate (Soda Crystals/Washing Soda).

Remember Acids react with Carbonates to form the salt , water, and carbon dioxide.

Here is the BALANCED reaction eq'n

2CH3COOH + Ns2CO3 = 2[CH3COO=Na+] + H2O + CO2

Here is the UNbalamced reaction between vinegar and sulphuric acid

H2SO4 + CH3COOH = = 3H^(+) + SO4^)2-) + CH3COO^- No neutral salt or water. )FOES NOT WORK) .

What happens when you put zinc in hydrochloric acid?

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What happens??? It reacts!!!!

You will see effervescence(bubbles) of hydrogen gas being liberates, and the zinc metal slowly disappearing.

Here is the Balanced reaction eq'n

Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(g) .

What is the name of AgBr2?

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AgBr2 doesn't have a widely accepted common name. However, based on chemical nomenclature conventions, here are two possibilities:

• Dibromosilver: This is the most straightforward name based on the constituent atoms: di- (two) + bromo (bromine) + silver.

Silver(II) bromide: This name follows the Stock nomenclature system, indicating a silver cation with a +2 charge (though silver typically doesn't form stable +2 ions) combined with two bromide anions.

It's important to note that AgBr2 is not a common compound. Silver typically forms a 1:1 halide salt with bromine, resulting in silver bromide (AgBr), which is well-known for its light sensitivity and use in photography.👇👇

What is the name for CH3CH22COOH?

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If you meanCH3CH2CH2COOH , then it is butanoic acid.

Normally the ethylene groups are bracketed as CH3(CH2)2COOH, writing ity as CH2CH22COOH indicates that there are '22' *(twenty two) carbons present , which in this case would be an impossibility .

Do acids have positive charges or negative charges?

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All acids have positive charge.

Both mineral and carboxylic acids ionise to some degree in solution producig hydrogen ions H^(+). , Notice they are plus/positive. It is these ions that are the avid component on a substance.

E.g. Mineral acid H2SO4 = 2H^(+) + SO4^(2-)

e.g. Carboxylic acid CH3COOH = CH3COO^(-) + H^(+)

The pH scale indicates the number of H^(+) ions in a solution. The lower the number , the more H^(+) ions.

Folmula for sodium hydroxide plus hydrochloric acid -- sodium chloride plus water?

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Traditionally, if this reaction is taking place in solution, instead of writing

NaOH + HCl --> NaCl + H2O

you would write

OH- + H+ --> H2O

because when the compounds are in the presence of water, they do not actually attach to each other.

NaOH becomes Na+ and OH- ions, and Na+ will not attach to anything else in water.

Similarly, HCl becomes H+ and Cl- ions, and Cl- will not attach to Na+ in water. (Think about salt in water; it dissolves).

Na+ and Cl- are called "spectator ions" because they do not participate in the reaction. They are just floating around in the beaker, so scientists do not include them in the final equation. What is left is OH- and H+ ions which makes H2O.

Is gaviscon an acid or base?

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Gaviscon contain alginic acid which is made from seaweed

Is a pH 4 a base or an acid?

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pH = 4 is mildly acidic.

The pH scale is

[H = 1 strongly acidic

pH = 4 mildly acidic

pH = 7 neutral ( Water)

pH = 9 mildly alkaline

pH = 14 strongly alkaline.

What is the common name of Formic acid?

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Formic Acid is the archaic common name. Its modern IUPAC name is Methanopic Acid.

The formula is HCOOH

Is caustic soda flammable?

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Caustic soda, also known as sodium hydroxide, is not flammable in its pure form. It is a highly reactive compound that is soluble in water and often used in various industrial processes such as manufacturing soaps, detergents, and paper. However, caution should be exercised when handling caustic soda, as it can react violently with certain materials, releasing heat and potentially causing fires or explosions. When stored or transported, it is essential to follow proper safety protocols to prevent accidental reactions.

Chemical Iran, a reputable company in the chemical industry, ensures the safe handling and distribution of caustic soda and other chemicals. With a commitment to quality and safety, Chemical Iran adheres to strict guidelines and regulations to mitigate any potential risks associated with handling caustic soda, providing customers with peace of mind and reliable products for their industrial needs.

Theorist divided the poets into strong and weak?

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This statement reflects a common idea in literary theory that categorizes poets based on the strength of their writing and themes. Strong poets are considered to be those who have a profound impact on their readers and society, while weak poets may lack depth or originality in their work. This classification is subjective and can vary depending on individual perspectives and preferences.

What does the narrator suggests by weary and weak?

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The narrator suggests that the character is physically or emotionally exhausted, lacking strength or energy. This could indicate that the character is experiencing hardship or fatigue.

How does God use the weak to guide the strong?

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God can use the weak to guide the strong by showing that strength alone is not enough to achieve success or righteousness. The weak can demonstrate humility, perseverance, and faith, which can serve as examples for the strong to follow and learn from. God may also use the weak to challenge the strong to rely on Him for guidance and wisdom.

Why was Robert boules book on acids and alkalis important?

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Robert Boyle's book on acids and alkalis, "The Sceptical Chymist," was important because it questioned traditional alchemical theories and laid the foundation for modern chemistry. Boyle proposed the idea that matter was made up of atoms and introduced the concept of chemical elements as distinct substances. His work helped to shift the focus of chemistry from mystical beliefs to empirical observations and experimentation.

What Products contain acid?

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Products that typically contain acid include vinegar, citrus fruits, batteries, certain cleaning products (e.g. toilet bowl cleaners, oven cleaners), and some skincare products (e.g. exfoliating acids like glycolic acid or salicylic acid).

What are the chemicals found in H2SO4?

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H2SO4 is a chemical.

I think you mean , 'What elements are in H2SO4'.

They are Hydrogen (H)

Sulphur(S) and Oxygen (O).

H2SO4 is Sulphuric Acid.

It is a combination of '--

2 atoms of hydrogen

1 atom of sulphur

4 atoms of oxygen.

Hydrochloric acid and acetic acid balanced chemical equation?

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These two aCIDS DO not REACT, BECAUSE OF THE COMON ION (h^(+)) EFFECT,

What name is given to a substance which changes colour in acids and alkali's?

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Universal Indicator.

NB Litmus paper onl;y changes from red to blue.