In Reaksie 1 tree platinum (Pt) as h katalisator op - NSC Physical Sciences - Question 8 - 2016 - Paper 2
Question 8
In Reaksie 1 tree platinum (Pt) as h katalisator op.
Watter NAAM word gegee aan die energie wat h katalisator verander in 'n chemiese reaksie?
Reaksie 2 bereik eew... show full transcript
Worked Solution & Example Answer:In Reaksie 1 tree platinum (Pt) as h katalisator op - NSC Physical Sciences - Question 8 - 2016 - Paper 2
Step 1
Watter NAAM word gegee aan die energie wat h katalisator verander in 'n chemiese reaksie?
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Answer
Die energie wat 'n katalisator verander in 'n chemiese reaksie word aktivering of aktiveringsenergie genoem.
Step 2
Is die reaksie EKSTOTERMIES of ENDOTERMIES? Gee h rede.
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Die reaksie is EKSTOTERMIES omdat ΔH negatief is, wat beteken dat energie vrygestel word gedurende die reaksie.
Step 3
Skryf TWEE veranderings neer wat gedoen moet word om die opbrengs van NO2 neer te laat lenken.
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Answer
Verhoog die druk in die stelsel.
Verminder die temperatuur.
Step 4
Wat is die waarde van ΔH per mol van die NO2 wat gevorm word?
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Die waarde van ΔH per mol van NO2 wat gevorm word is -74,55 kJ.
Step 5
Skryf neer die NAAM van die tipe reaksie tussen suur en 'n basis.
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Dit is 'n neutralisasie reaksie.
Step 6
Watter partikel (PROTON en ELEKTRON) is oorgedra tydens die reaksie in VRAAG 8.3?
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Die partikel wat oorgedra is, is die PROTON.
Step 7
Om die persentasie suiweling van h ONSUIWER MONSTER te bepaal, word die monster in water opgelos en teoreties ammoniumitraat (NH4NO3) neutraliseer presses 2,4 x 10-3 moler.
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Answer
Om die persentasie suiweling te bereken:
Bereken die molmassas: m(NH4NO3) = 80 g/mol.
Bereken die totale massa van die monster: m(NH4NO3) = n imes M = 2,4 imes 10^{-3} ext{ mol} imes 80 ext{ g/mol} = 0,192 g.
