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Adwaith rhwng asid hydroclorig - sodiwm thiosylffad

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  • Essay length: 867 words
  • Submitted: 02/09/2003
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GCSE Welsh

The first 200 words of this essay...

ENW: Sean Elfed Lewis

RHIF ARHOLIAD: 8058

RHIF Y GANOLFAN: 68424

Adwaith rhwng asid hydroclorig

A sodiwm thiosylffad

* Mi rydwyf yn ceisio darganfod sut mae newid y crynodiad o sodiwm thiosylffad yn mynd i effeithio ar gyfradd yr adweithedd rhwng asid hydroclorig a'r sodiwm thiosylffad.

* Y newidynnau gall effeithio ar yr arbrawf yw cyfaint asid, tymheredd, crynodiad y sodiw thiosylffad a'r cyfaint o ddwr. (Catalydd), (Arwynebedd arwynebol).

* Y newidyn byddaf yn ei newid yn yr arbrawf fydd y crynodiad o sodiwm thiosylffad. Mi fyddai'n defnyddio amrediad rhwng 10 a 50 cm³ hefo'r sodiwm thiosylffad yn mynd i fyny 10 cm³ bob tro. Fyddai'n gwneud yr un arbrawf tair gwaith i bob crynodiad o sodiwm thiosylffad. Mi fyddai yn newid crynodiad o sodiwm thiosylffad drwy ychwanegu dwr i'r arbrawf.

* Mi fyddaf yn rheoli y gweddill gan wneud yr un arbrawf yn yr un ystafell i wneud yn siwr fod y tymheredd yn gyson. Mi fyddaf yn defnyddio'r un cyfaint a crynodiad o'r asid hydroclorig trwy'r arbrawf i gyd.

* Y newidyn allan i gael y canlyniadau yn gywir yw yr un person i edrych pan mae'r groes

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