Video: Puas yog acids thiab alkalis opposites?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib ACID yog ib yam khoom uas yaj hauv dej los tsim cov khoom zoo hu ua hydrogen ions (H+). Cov rov qab ntawm kua qaub yog ib ALKALI uas yaj hauv dej los tsim cov ions tsis zoo ntawm hydrogen thiab oxygen hu ua hydroxide ions (OH-). Alkalis yog ANTI AIDS vim lawv tshem tawm acidity.
Kuj nug, yog acid qhov opposite ntawm alkaline?
Feem ntau siv lus lus ntawm kua qaub isalkali, ntawm acidic yog alkaline . Raws li koj hais, kua qaub / acidic xa mus rau pH tsawg dua 7, alkali / alkaline pH ntau dua 7, thiab nruab nrab rau pH sib npaug rau 7.
Ib sab saum toj, dab tsi yog acid thiab alkaline? Cov kua qaub muaj pH tsawg dua 7. Alkalis havea pH ntau dua 7 Cov khoom nruab nrab muaj pH sib npaug rau 7. Cov kua qaub muaj ntau cov hydrogen ions, uas muaj lub cim H +. Alkalis muaj ntau cov hydroxide ions, cim OH-. Dej yog nruab nrab vim hais tias tus naj npawb ntawm hydrogen ions sib npaug rau cov hydroxide ions.
Tsis tas li ntawd, qhov txawv ntawm cov kua qaub thiab alkali yog dab tsi?
Qhov sib txawv ntawm cov kua qaub , alkali , andbases: Cov kua qaub yog cov tshuaj uas muaj pH tsawg dua 7.0, thaum lub hauv paus yog cov khoom uas muaj pH ntau tshaj 7.0. Ib cov piv txwv ntawm cov hauv paus yog sodium hydroxide, potassium hydroxide, thiab lwm yam. Cov kua qaub feem ntau saj qaub, thaum lub hauv paus muaj abitter saj.
Vim li cas alkalis tau piav raws li qhov sib txawv ntawm cov kua qaub?
Bases yog cov khoom uas cuam tshuam nrog kua qaub andneutralise lawv. Copper oxide yog lub hauv paus vim nws yuav hnov mob nrog kua qaub thiab neutralize lawv, tab sis nws tsis yog ib qho alkali vim nws tsis yaj hauv dej. Sodium hydroxide yog ib lub hauv paus vim nws yuav hnov mob nrog kua qaub thiab neutralisethem.
Pom zoo:
Cov qauv thiab kev ua haujlwm ntawm nucleic acids yog dab tsi?
Nucleic acids yog macromolecules uas khaws cov ntaub ntawv caj ces thiab ua kom muaj protein ntau. Nucleic acids muaj xws li DNA thiab RNA. Cov molecules no yog tsim los ntawm ntev strands ntawm nucleotides. Nucleotides yog tsim los ntawm nitrogenous puag, tsib-carbon qab zib, thiab phosphate pawg
Acids thiab ntsev yog dab tsi?
Cov kua qaub txhais tau tias yog ib yam khoom uas nws cov kua dej qab qab zib, tig xiav litmus liab thiab neutralizes hauv paus. Ntsev yog cov khoom nruab nrab uas nws cov kua dej tsis cuam tshuam rau litmus. Raws li Faraday: acids, bases, thiab ntsev yog hu ua electrolytes
Dab tsi yog alkalis thiab acids?
Alkalis muaj pH ntau dua 7 Cov khoom nruab nrab muaj pH sib npaug li 7. Cov kua qaub thiab alkalis ob leeg muaj ions. Cov kua qaub muaj ntau cov hydrogen ions, uas muaj lub cim H +. Alkalis muaj ntau hydroxide ions, cim OH-. Dej yog nruab nrab vim hais tias tus naj npawb ntawm hydrogen ions sib npaug rau cov hydroxide ions
Dab tsi yog qhov txawv ntawm Arrhenius txhais thiab brønsted Lowry txhais ntawm acids thiab bases?
Qhov txawv ntawm peb txoj kev xav yog qhov kev xav Arrhenius hais tias cov kua qaub ib txwm muaj H + thiab cov hauv paus ib txwm muaj OH-. Thaum tus qauv Bronsted-Lowry thov tias cov kua qaub yog cov neeg pub dawb proton thiab cov neeg txais kev lees paub yog li cov hauv paus tsis tas yuav muaj OH- yog li cov kua qaub pub ib qho proton rau dej tsim H3O +
Cov tshuaj twg yog alkalis?
Alkalis yog cov tshuaj caustic uas yaj hauv dej los tsim cov tshuaj nrog pH ntau dua 7. Cov no suav nrog ammonia; ammonium hydroxide; calcium hydroxide thiab oxide; poov tshuaj; poov tshuaj hydroxide thiab carbonate; sodium; sodium carbonate, hydroxide, peroxide thiab silicates; thiab trisodium phosphate