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Jadual 2 menunjukkan maklumat tentang asid P dan asid Q. |
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Table 2 shows the information about acid P and acid Q. |
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Asid P
Acid P |
Asid Q
Acid Q |
pH \({5}\) |
pH \({1}\) |
Asid monoprotik
Monoprotic acid |
Asid diprotik
Diprotic acid |
Digunakan dalam pembuatan jeruk buah
Used in making fruit pickles |
Digunakan dalam akumulator asid plumbum
Use in lead-acid accumulator |
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Jadual 2 |
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Table 2 |
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(a) |
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Apakah maksud asid? |
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What is the meaning of acid? |
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[1 markah] |
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[1 mark] |
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(b) |
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Berdasarkan maklumat dalam Jadual 2, nyatakan nama bagi asid P dan asid Q. |
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Based on the information in Table 2, state the name of the acid P and acid Q. |
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Asid P / Acid P : .....................................................................................................................................................................................................................................................................................
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Asid Q / Acid Q : .................................................................................................................................................................................................................................................................................... |
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[2 markah] |
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[2 marks] |
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(c) |
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Larutan P dan Q yang diberi mempunyai kepekatan yang sama tetapi mempunyai nilai pH yang berbeza. Terangkan, mengapa. |
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Solution P and Q given has same concentration but the pH values are different. Explain, why. |
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[2 markah] |
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[2 marks] |
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(d) |
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Pepejal kuprum(II) sulfat diberi untuk menyediakan \({250}\) \(\text{cm}^{3}\) larutan kuprum(II) sulfat \({1.0}\) \(\text{mol dm}^{-3}\). |
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Solid copper(II) sulphate is given to prepare \({250}\) \(\text{cm}^{3}\) of \({1.0}\) \(\text{mol dm}^{-3}\) of copper(II) sulphate solution. |
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[Jisim atom relatif: \({O}\) = \({16}\), \({Cu}\) = \({64}\), \({S}\) = \({32}\)] |
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[Relative atomic mass: \({O}\) = \({16}\), \({Cu}\) = \({64}\), \({S}\) = \({32}\)] |
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(i) |
Terangkan kaedah untuk menyediakan \({250}\) \(\text{cm}^{3}\) larutan kuprum(II) sulfat \({1.0}\) \(\text{mol dm}^{-3}\). |
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Explain how would you prepare \({250}\) \(\text{cm}^{3}\) of \({1.0}\) \(\text{mol dm}^{-3}\) copper(II) sulphate solution. |
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[3 markah] |
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[3 marks] |
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(ii) |
Larutan kuprum(II) sulfat \({1.0}\) \(\text{mol dm}^{-3}\) dicairkan dengan air suling untuk menghasilkan \({500}\) \(\text{cm}^{3}\) larutan dengan kepekatan \({0.5}\) \(\text{mol dm}^{-3}\). Terangkan secara ringkas bagaimana larutan ini disediakan. |
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\({1.0}\) \(\text{mol dm}^{-3}\) of copper(II) sulphate is diluted with distilled water to produce \({500}\) \(\text{cm}^{3}\) of \({0.5}\) \(\text{mol dm}^{-3}\) of concentration of the solution. Explain briefly how to prepare this solution. |
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[2 markah] |
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[2 marks] |
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