Cov txheej txheem:

Qhov hnyav sib npaug ntawm NaOH yog dab tsi?
Qhov hnyav sib npaug ntawm NaOH yog dab tsi?

Video: Qhov hnyav sib npaug ntawm NaOH yog dab tsi?

Video: Qhov hnyav sib npaug ntawm NaOH yog dab tsi?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Qhov sib npaug ntawm NaOH yog 40 grams . Nws yog raws li tus qauv, Gram molecular hnyav muab faib los ntawm 'n' yam.

Ua raws li qhov no hauv kev txiav txim siab, koj yuav ua li cas pom qhov hnyav ntawm NaOH?

Xam Gram Qhov hnyav Eq Qhov hnyav = 98.08 / 2 = 49.04 g / ua eq . Cov grams sib npaug hnyav ntawm H2YOG4 yog 49.04 g ua eq . Tsuas yog ib nrab ntawm sulfuric acid ntau dua li, piv txwv li, HCl, yog xav tau los ua ib yam dab tsi nrog cov kua qaub. Cov gram sib npaug qhov hnyav ntawm NaOH yog 40.00 g ua eq.

Tom qab ntawd, lo lus nug yog, qhov sib npaug ntawm Nios yog dab tsi? Nws yog monoprotic acid uas nws cov mis yog KHC8H4O4 thiab molecular hnyav yog 204.22 g/mol.

Ib yam li ntawd, tib neeg nug, qhov sib npaug hnyav npaum li cas?

Sib npaug hnyav yog hnyav ntawm 1 sib npaug ntawm tej yam khoom. Nws yog sib npaug rau molar mass muab faib los ntawm N factor. Normality qhia tus naj npawb ntawm sib npaug nyob rau hauv 1 liter ntawm kev daws.

Koj pom qhov molarity ntawm NaOH li cas?

Txoj Kev 1:

  1. Xam tus naj npawb ntawm moles ntawm cov kuab tshuaj tam sim no. mol NaOH. = 15.0g NaOH. x. 1 mol NaOH. 40,0 g NPO. mol NaOH.
  2. Muab xam cov litres ntawm cov tshuaj tam sim no. L os. = 225 mL. x. 1 L. = np
  3. Faib tus naj npawb ntawm moles ntawm solute los ntawm tus naj npawb ntawm litres ntawm kev daws. M. = 0.375 mol NaOH. = 1.67 M NPO. 0,225l ua.

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