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WHAT IS AN ACID OR A BASE?

By the 1884 definition of Svante Arrhenius (Sweden), an acid is a material that can release a proton or hydrogen ion (H+). Hydrogen chloride in water solution ionizes and becomes hydrogen ions and chloride ions. If that is the case, a base, or alkali, is a material that can donate a hydroxide ion (OH-).

menurut definisi dari Svante Arrhenius seorang ilmuwan swedia, asam (acid) adalah material yang dapat melepaskan ion hidrogen (H+). sedangkan basa adalah material yang dapat melepaskan ion hidroksida (OH-), soal latihan asam basa dapat di download pada akhir posting

Sodium hydroxide in water solution becomes sodium ions and hydroxide ions. By the definition of both Thomas Lowry (England) or J.N. Brensted (Denmark) working independently in 1923, an acid is a material that donates a proton and a base is a material that can accept a proton. Was Arrhenius erroneous?. The Arrhenius definition serves well for a limited use. We are going to use the Arrhenius definitions most of the time. The Lowry- Br?nsted definition is broader, including some ideas that might not initially seem to be acid and base types of interaction. Every ion dissociation that involves a hydrogen or hydroxide ion could be considered an acid- base reaction. Just as with the Arrhenius definition, all the familiar materials we call acids are also acids in the Lowry- Br?nsted model. The G.N. Lewis (1923) idea of acids and bases is broader than the Lowry- Br?nsted model. The Lewis definitions are: Acids are elecron pair acceptors and bases are electron pair donors.

berikut adalah link untuk mendownload soal latihan kimia asam basa, tulisan dalam format pdf.

Soal Latihan Asam Basa

Soal latihan tersebut dalam bahasa indonesia dalam format pilihan ganda, terdapat soal teori maupun hitungan, sehingga diharapkan dapat sebagai latihan untuk mengkuti UAN maupun SPMB

Chemical reactions, also called chemical changes, are not limited to happening in a chemistry lab. Here are some examples of chemical reactions with the corresponding chemical equations:
dalam posting ini soal reaksi kimia dapat di download pada akhir posting

• A silver spoon tarnishes. The silver reacts with sulfur in the air to make silver sulfide, the black material we call tarnish.

2 Ag + S –> Ag2S

• An iron bar rusts. The iron reacts with oxygen in the air to make rust.

4 Fe + 3 O2 –> 2 Fe2O3

• Methane burns. Methane combines with oxygen in the air to make carbon dioxide and water vapor.

CH4 + 2 O2 –> CO2 + 2 H2O

• An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid).

Ca(OH)2 + 2 HCl –> CaCl2 + 2 H2O
As a general rule, biochemical happenings make poor examples of basic chemical reactions because the actual reaction is carried on within living things and under enzyme control.

Soal Latihan

Silahkan mendownload link soal latihan laju reaksi pada link berikut

Soal Laju Reaksi

soal tersebut dalam bahasa indonesia dengan format pdf , berisi berbagai soal tentang laju reaksi seperti konsentrasi larutan, hidrolisis, faktor laju reaksi dan lain sebagainya .