Yuav ua li cas thaum HCL ntxiv rau potassium chromate?
Yuav ua li cas thaum HCL ntxiv rau potassium chromate?

Video: Yuav ua li cas thaum HCL ntxiv rau potassium chromate?

Video: Yuav ua li cas thaum HCL ntxiv rau potassium chromate?
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Anonim

Raws li hydrochloric acid ntxiv mus rau poov tshuaj chromate tov, cov xim daj hloov mus rau txiv kab ntxwv. Thaum sodium hydroxide yog ntxiv mus rau poov tshuaj chromate tov, cov txiv kab ntxwv xim tig rov qab mus rau daj. Cov sodium hydroxide reacts nrog hydrogen ions, tshem tawm lawv los ntawm kev daws.

Ib yam li ntawd, nws raug nug, yuav ua li cas thaum potassium dichromate reacts nrog hydrochloric acid?

poov tshuaj dichromate + hydrochloric acid muab poov tshuaj chloride + chromium chloride + dej + chlorine.

Ib sab saum toj, dab tsi yog qhov txiaj ntsig ntawm kev ntxiv lub hauv paus rau potassium dichromate? Thaum alkali los yog puag yog ntxiv rau a dichromate kev daws teeb meem, muaj kev hloov pauv hauv txoj haujlwm ntawm cov tshuaj sib npaug. Thaum ib qho alkali zoo li sodium hydroxide ntxiv rau dichromate kev daws, cov xim txiv kab ntxwv ntawm cov tshuaj hloov mus rau xim daj.

Khaws qhov no hauv kev txiav txim siab, Xim ntawm potassium chromate yog dab tsi?

daj

Lub hom phiaj ntawm kev ntxiv NaOH ua ntej cov tshuaj tiv thaiv yog dab tsi?

NaOH tshem tawm H + ions, vim yog acid-base neutralization. Ntxiv NaOH yog sib npaug los txo qhov [H+ (aq)] hauv tshuaj tiv thaiv . Xyuas kom koj paub qhov txawv ntawm cov xim hloov los ntawm dilution (cov tshuaj yuav ua paler vim koj ntxiv dej) thiab xim hloov ntawm daj mus rau txiv kab ntxwv, los yog vice-versa.

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