Cemeg Uned 3
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Pa o'r canlynol yw gwir datganiad am hydrolysis halwynau?
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Beth yw rôl halen mewn system byffer?
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Pryd fyddai'n amhriodol defnyddio dangosydd asid-bas mewn titradiad?
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Pa ymateb sy'n digwydd pan ychwanegir ychydig bach o asid i system byffer amonia / amoniwm clorid?
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Pa ddatganiadau sydd yn wir am hydrolysis halwynau?
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Beth yw pH hydoddiant sy’n cynnwys 0.200 mol dm⁻³ o sodiwm ethanoad a 0.100 mol dm⁻³ o asid ethanoig? (Ka = 1.74 × 10⁻⁵ mol dm⁻³)
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Pa un o'r datganiadau canlynol sy'n gywir am system byffer asid ethanoig / sodiwm ethanoad?
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Pa ddangosydd fyddai’n fwyaf addas ar gyfer titradiad asid gwan gyda bas cryf?
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Trefnwch y dangosyddion canlynol gyda'u pH troi a'u lliw mewn amodau alcalïaidd.
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Trefnwch y systemau byffer canlynol gyda’r cydranau cywir.
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