Cemeg Uned 3
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Cydweddwch y cysyniadau â'u diffiniadau.
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Pam mae’n bwysig peidio â drysu rhwng “asid gwan” ac “asid gwanedig”?
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Yn ôl damcaniaeth Lowry-Brønsted, beth yw diffiniad asid?
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Beth yw’r gwahaniaeth rhwng pH asid cryf a gwan gyda’r un crynodiad?
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Beth yw pH hydoddiant 0.050 mol dm⁻³ o Ba(OH)₂?
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Parwch y pH â'r crynodiad cyfatebol (neu agos iddo).
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Beth yw crynodiad HCl os yw’r pH yn 1.14?
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Mae pH 0.0500 mol dm⁻³ o asid gwan monobasig yn 3.27. Beth yw Ka'r asid?
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Hydoddiant 500 cm³ sy’n cynnwys 1.9g o asid gwan gyda pH o 3.5. Ka = 2.0 × 10⁻⁶. Beth yw màs molar yr asid?
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Mae pH asid monobasig gwan (0.10 mol dm⁻³) yn 2.85. Beth yw gwerth Ka?
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