⑴計算氫氧化鋇莫爾濃度。

⑵ 0.0400 M Na2C2O4 Ka2(H2C2O4) = 5.42 × 10-5

⑶ 40.0 mL 的 0.1250 M NH3 與 20.0 mL 的 0.100 M HCl 混合溶液 Ka(NH4+) = 5.7 × 10-10

⑷ 0.0240 M H2C2O4（oxalic acid）及 0.0360 M Na2C2O4混合溶液

⑸ 0.0400 M C2H4(NH3+ Cl- )2 Ka1(NH3C2H4NH3+2) = 1.42 × 10-7

⑵如果重量與體積的標準偏差分別為±0.3mg 及±0.02 mL，計算莫爾濃度 的標準偏差並以有效數字表示氫氧化鋇莫爾濃度及標準偏差。

一、Translate the following English passage into Chinese.（25 分） British Prime Minister Theresa May is calling on her fractious Conservative Party to unite on a Brexit strategy and help her negotiate a separation agreement with the European Union. May told her party’s annual conference Wednesday in Birmingham they are entering the “toughest phase of the negotiations.” Britain will leave the 28-nation bloc on March 29 and talks to reach a divorce deal have stalled. An influential pro-Brexit faction within May’s party led by former foreign minister Boris Johnson is urging her to be firm and exit the European Union without a deal if necessary. The faction opposes May’s proposal for Britain to adhere to EU trade rules after it leaves, calling instead for a clean break. May did not rule out leaving without an agreement, but said doing so “would be a bad outcome for the U.K. and the EU.”

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三、Essay Writing（50 分） Speaking at a press conference, National Development Council (NDC) Minister Chen Mei-ling said that the idea of Taiwan as “a bilingual country” had been suggested to the government by several associations such as the European Chamber Of Commerce Taiwan and the Academia Sinica. The new bilingual plan’s main goal is to promote comprehensive English ability by Taiwanese nationals with advanced training for reading, speaking, listening, and writing skills. “In the era of the digital economy, an excellent language ability is necessary for the development of Taiwan,” Chen said. At present, the NDC is designing a comprehensive plan to put the bilingual-country policy into practice. Please recommend three concrete and feasible ways for our government to put the bilingual-country policy into practice and also explain why these ways are important. (You should write at least 250 words)

一、英國傳統文官體制被稱為「白廳模式」（Whitehall model），試說明其內 涵？又曾有學者質問「白廳模式還在嗎」（Has the Whitehall model survived），或用「白廳之死」（The End of Whitehall model）形容，試分 析其意涵？（25 分）

二、保護揭弊者（Whistleblower）是美國功績原則之內涵，試從相關法律、 適用機關及人員、不法情事（弊端）範圍、揭發管道、保護救濟等面向， 說明美國（聯邦）公務員揭弊保護制度。（25 分）