Close

2021-06-17

What is a molecular formula in chemistry?

What is a molecular formula in chemistry?

A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.

What is the formula that indicates the total number of atoms of the elements in a compound?

The molecular formula indicates the exact number of atoms in the molecule. The empirical formula expresses the smallest whole number ratio of the atoms in the element. In this case, the empirical formula of glucose is CH2O.

What is the chemical formula for an element?

A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. Water is composed of hydrogen and oxygen in a two to one ratio. The chemical formula for water is H2O.

What is chemical formula of gold?

Au

What does chemical name mean?

The name of a chemical compound that shows the names of each of its elements or subcompounds. For example, the chemical name of aspirin is acetylsalicylic acid.

What is the chemical name for Oh?

hydroxide hydroxide

What is the chemical name for k?

Potassium

What type of structure is K?

Potassium is a chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19….

Potassium
Crystal structure ​body-centered cubic (bcc)
Speed of sound thin rod 2000 m/s (at 20 °C)
Thermal expansion 83.3 µm/(m·K) (at 25 °C)

What is the chemical name of Fe?

Iron (Fe)

Is hydrogen acidic or basic?

High concentrations of hydrogen ions yield a low pH (acidic substances), whereas low levels of hydrogen ions result in a high pH (basic substances). The overall concentration of hydrogen ions is inversely related to its pH and can be measured on the pH scale (Figure 1).

Is H3O+ an acid or base?

Acid-bases occur as conjugate acid-base pairs. CH3COOH and CH3COO- are a pair. H2O and H3O+ are a pair. The conjugate base of an acid is the base that is formed when the acid has donated a hydrogen ion.

Is Na+ an acid or base?

The large sodium ion, Na+, is neither an acid nor a base in water.

Is a an acid or base?

Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic. A base is a substance that accepts hydrogen ions….What does it mean for a solution to be acidic or basic (alkaline)?

pH Value H+ Concentration Relative to Pure Water Example
4 1 000 tomato juice, acid rain

What is the pH of 0.01 M solution?

From the above reaction (i), we can see that 1 mole of H+reacts with 1 mole of Cl−to give 1 mole of Hydrochloric acid – HCl. Therefore, 0.01 M solution of HCl will produce 0.01 M of H+. Hence, the answer is – option (d) – the pH of 0.01 M solution of HCl is 2.

What is the pH of 0.01 m ch3cooh?

The correct answer we get than is: pH = 3. In this case pK_a = 3.74 and pc = -log(0.001) = 3, so pH = 0.5(3.74+3) = 3.37, the answer given.

What is the pH of 0.1 m NaOH?

13