Muaj pes tsawg moles nyob rau hauv 1 mL ntawm acetic acid?
Muaj pes tsawg moles nyob rau hauv 1 mL ntawm acetic acid?

Video: Muaj pes tsawg moles nyob rau hauv 1 mL ntawm acetic acid?

Video: Muaj pes tsawg moles nyob rau hauv 1 mL ntawm acetic acid?
Video: Aus Xaum Thaib TuaTsheb Nyob VibNais Liam RauHmoob 1/20/2022 2024, Kaum ib hlis
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Yog tias koj xav tias daim duab no, nws txhais tau tias 20 ml yuav muaj 1 ml ntawm acetic acid. Qhov ntom ntawm acetic acid yog 1.05 g / cc ntawm ambient kub, thiab molar mass yog 60.05 g/mol. Yog li ntawd nyob rau hauv 20 ml ntawm vinegar, koj yuav muaj (1x 1.05 / 60.05 ) = 0.0175 moles ntawm aceticacid.

Ntawm no, pes tsawg moles nyob rau hauv acetic acid?

SI base unit rau tus nqi ntawm cov khoom yog tus mole . 1 mole yog 1 Moles acetic acid , los yog 60.05196 g.

Tsis tas li ntawd, qhov molarity ntawm 5% acetic acid yog dab tsi? vinegar yog 5 % acetic acid thiab nws molarity yog 0.833m. Puas yog qhov concentration ntawm hydroniumion hauv vinegar ntau dua, tsawg dua, los yog sib npaug rau 0.833 M - vim li cas ho tsis? Piav vim li cas nws tsis raug ncaj qha xam cov pHof vinegar los ntawm cov molarity ntawm vinegar.

Ib sab saum toj, koj mus li cas ntawm mL rau moles?

MOLES LOS NTAWM VOLUME OF PURE LIQUID ORSOLID Muaj ob kauj ruam: Muab lub ntim los ntawm qhov ntom ntom tau qhov loj. Faib qhov loj los ntawm molar loj rau tau tus lej ntawm moles.

Yuav ua li cas koj nrhiav tau tus nqi ntawm moles?

Siv cov molecular formula nrhiav cov molar mass; kom tau cov tus naj npawb ntawm moles , faib qhov loj ntawm compound los ntawm molar loj ntawm lub compound qhia nyob rau hauv grams.

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