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Results for “pH”

13 terms


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Filtering by: pH Starts with R Clear all
Nuclear & Radiochemistry

Radiopharmaceutical

A radioactive compound administered to a patient for diagnosis or treatment.

MBq
Organic Chemistry

Racemic Mixture

An equimolar mixture of two enantiomers, which shows no net optical rotation.

50:50 (+) and (−) degrees
Nuclear & Radiochemistry

Radioactive Decay Series

A sequence of successive radioactive decays leading from a long-lived parent to a stable end product.

Dimensionless
Nuclear & Radiochemistry

Radiocarbon Dating

A dating technique that determines the age of organic material from its residual carbon-14 content.

t = (t½ / 0.693) ln(N₀/N) years
Stoichiometry & Chemical Reactions

Reactant

A starting substance that is consumed during a chemical reaction.

mol
Analytical Chemistry & Spectroscopy

Redox Titration

A titration in which the reaction between titrant and analyte involves electron transfer.

mol/L
Solutions & Colligative Properties

Relative Lowering of Vapour Pressure

The fractional reduction in a solvent's vapour pressure caused by dissolving a non-volatile solute.

(p° − p) / p° = x_solute Dimensionless
Atomic Structure & Periodicity

Rutherford Model

The nuclear model of the atom, in which a tiny dense positive nucleus is surrounded by orbiting electrons in mostly empty space.

Dimensionless
Nuclear & Radiochemistry

Radioactive Tracer

A radioisotope introduced into a system so that its pathway can be followed by detecting its radiation.

Bq
Nuclear & Radiochemistry

Radioactivity

The spontaneous emission of particles or electromagnetic radiation from unstable atomic nuclei.

Bq
Chemical Kinetics & Catalysis

Rate-Determining Step

The slowest step in a reaction mechanism, which limits the overall rate.

Dimensionless
Chemical Kinetics & Catalysis

Reaction Intermediate

A species produced in one step of a mechanism and consumed in a later one, so it does not appear in the overall equation.

mol/L
Atomic Structure & Periodicity

Rydberg Formula

The empirical equation predicting the wavelengths of the spectral lines emitted by a hydrogen-like atom.

1/λ = R_H(1/n₁² − 1/n₂²) m⁻¹