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化學 高中

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)7.為了更明確表示溶液的酸鹼性,有人提出了酸度:AG 的概念,即 離子積變小 (E)水的游離百分率不變。 FAX: E 10 CM (H+) AG=log| ,CM(H+)為水溶液中氫離子的濃度,Cu(OH)為水 CM (OH) 溶液中氫氧離子的濃度。下列敘述何者正確?(A)中性溶液的 AG =0 (B)常溫下,0.1M 鹽酸的 AG<0.1M 醋酸的 AG (C)常溫下,0.1M 氫氧化鈉水溶液的 AG=12 (D)酸性溶液的 AG<0 (F)0.1M 鹽酸在 加水稀釋的過程中,AG 值逐漸變小,而趨近於0。 (BC) 8.有甲、乙、丙三個燒杯,分別盛有:(甲)25℃純水;(乙)25℃ 14 之含有 4.0 g NaOH(s)的純水 100 mL;(丙)50℃的純水,則下列敘述 何者正確? (NaOH=40) (A)乙之 Kw比甲大 (B)丙之 Kw比乙大 (C) 乙之 pH 約為 14 (D)甲、丙之 pH 相等 (E)pOH 值順序依次為乙> 甲>丙。 (AD) 9.滴滴1.0 MHCI 水溶液於 )9.滴一滴 1.0 M HCI 水溶液於 10 mL 之 25℃ 水中(每20 滴為1 mL), 則下列何者為正確? (log5=0.70) (A)[H+]=5×10-3M (B)[OH⁻]= 1.0×10-14 M (C)pH=2.7 (D)pOH=11.7 (E)[H*][OH]>1×10~14 。 )10.25℃,某二元鹼B(OH)2之溶液25mL,以0.50M 鹽酸滴定需消耗 50mL,於滴定前,以 pH 儀量測此二元鹼 B(OH)2之溶液得 pH=10。 根據小明的實驗,下列敘述何者正確?(A)滴定前,此單元鹼之溶 液中的[H]=1.0×10~10M,[OH⁻]=1.0×10M (B)該單元鹼之初濃度 為[BOH]=1.0×10-3M (C)該單元鹼應為弱鹼 (D)為求滴定終點,以 酚酞為指示劑較不合適 (E)該反應之淨離子反應式為 H*(aq)+OH(aq) →H2O(l)。 B+H ALD ISTRY

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英文 高中

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VI. 混合題:11% Thspire him or her. McDonald's does more than just sell hamburgers. The Ronald McDonald House Charities (RMHC), an independent American nonprofit organization, aims to improve the welfare of children. The core programs of RMHC include Ronald McDonald House, Ronald McDonald Family Room, and Ronald McDonald Care Mobile. Ronald McDonald House There are 375 Ronald McDonald Houses right now, providing a place to stay for families with sick children under 21 years old. These children can receive medical treatment at nearby hospitals. Over 7,200 bedrooms are supplied each night, worth an estimated $700 million in hotel expenses. Ronald McDonald Family Room The 262 Ronald McDonald Family Rooms can be found in 28 countries. Family members who cannot stay at a Ronald McDonald House can come to live in these rooms. These Family Rooms are equipped with basic facilities for resting, doing laundry, or taking a shower not far from the sick children. Ronald McDonald Care Mobile Presently, there are 51 Ronald McDonald Care Mobiles. The mission of this program is to offer healthcare for children from the neighborhood for free. More than 100,000 children have benefited from this service annually. 公舍 B ) 39. What is the purpose of the first paragraph? (3%) (A) To promote McDonald's hamburgers. Solo (B) To give a brief introduction of RMHC. borla bn (C) To compare the three programs of RMHC. (D) To raise our awareness of the importance of charity. 40. Choose the INCORRECT fact from the table below. (3%) Ronald McDonald Ronald McDonald Ronald McDonald Program House Family Room Care Mobile Number (A) 375 262 (B) 51 (C) Waiting rooms for Services Places for families with people whose family (D) Health care for Provided sick children under 21 members are examined children who live nearby by doctors 11. What is the central idea shared by the three core programs of RMHC? Find the answer from the above text and copy it. (5%) lauld lady

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