# Quick answer: Which Of The Following Has Lowest PH Value?

## What is the pH of NaCl?

7pH of sodium chloride solutions The pH of a sodium chloride solution remains ≈7 due to the extremely weak basicity of the Cl− ion, which is the conjugate base of the strong acid HCl..

## What are 3 weak acids?

All the other acids are weak. The strong acids are hydrochloric acid, nitric acid, sulfuric acid, hydrobromic acid, hydroiodic acid, perchloric acid, and chloric acid. The only weak acid formed by the reaction between hydrogen and a halogen is hydrofluoric acid (HF).

## What is a weak acid Example?

A weak acid is an acid that doesn’t produce many hydrogen ions when in aqueous solution. Weak acids have relatively low pH values and are used to neutralize strong bases. Examples of weak acids include: acetic acid (vinegar), lactic acid, citric acid, and phosphoric acid.

## What is the pH of 0.05 M HCl?

1.3Because it’s a strong acid and it fully dissolves , the concentration of [HCl] equals to the [H+] (H3O+) concentration therefore : [H+]= 0.05M. pH=-log[H+] pH=-log(0.05)=1.3.

## Is NaCl acidic or basic?

Salts That Form Neutral Solutions An example is sodium chloride, formed from the neutralization of HCl by NaOH. A solution of NaCl in water has no acidic or basic properties, since neither ion is capable of hydrolyzing.

## How is pH calculated?

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+]. … Example: What is the pOH of a solution that has a hydroxide ion concentration of 4.82 x 10-5 M?

## What is the pH of pure water?

7The pH of pure water is 7, the negative logarithm of 1 X 10-7. A neutral solution is one that is neither acidic nor basic. The hydrogen ion concentration equals the hydroxide ion concentration, and both equal 1 X 10-7 M.

## What is the range of pH?

0 to 14The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.

## What is the pH of 1m NaCl?

NaCl is formed by NaOH and HCl which are strong base and strong acid respectively. So they will completely dissociate and neutralise each other. So the pH will be 7. What is the pH of an aqueous solution of 1M HCl and 1M NaCl?

## What is the pH of 10 8 M HCl?

about 6.8Video Explanation The concentration of HCl is given as 10−8 M. pH is calculated based on the protons of the acid and the water. 10−8 M is a very low concentration and hence the protons from water are also considered. This gives the value of the pH of about 6.8 which is very close to 7.

## What is pH full form?

In chemistry, pH (/piːˈeɪtʃ/) (abbr. power of hydrogen or potential for hydrogen) is a scale used to specify how acidic or basic a water-based solution is.

## What is the pH of Na2CO3?

pH of Common Acids and BasesBaseName1 mMNa2CO3sodium carbonate (soda ash)10.52NH4OHammonium hydroxide (NH3:H2O)10.09Mg(OH)2magnesium hydroxide (MgO:H2O)10.40CaCO3calcium carbonate (calcite)9.9123 more rows•Apr 20, 2016

## Which has lowest pH value?

Concentrated hydrochloric acid has the lowest pH (0 to 1). There are many other acids as well having a very low pH.

## Which of the following is a weak acid?

A weak acid is an acid which on dissociation in an aqueous solution produces low concentration of H+ ions. Acetic acid (CH3COOH), Formic acid (HCOOH), Carbonic acid (H2CO3) are considered as weak acids.