兗礦考試化學(內(nèi)部模擬題)-在線瀏覽
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【正文】 D．Fe(0H)3跟鹽酸反應：OH+H+9H2015．患甲狀腺腫大是邊遠山區(qū)常見的地方病，下列元素對該病有治療作用的是 A．鈉元素 B．氯元素 C．碘元素 D．鐵元素16．新制氯水與久置的氯水相比較，下列結論不正確的是 A．顏色相同 B．前者能使有色布條褪色 C．都含有H+ D．加AgNO3溶液都能生成白色沉淀17．能證明硅酸的酸性弱于碳酸酸性的實驗事實是 A．CO2溶于水形成碳酸，SiO2難溶于水 B．CO2通人可溶性硅酸鹽中析出硅酸沉淀 C．高溫下SiO2與碳酸鹽反應生成C02 D．CO2是氣體，SiO2是固體18．向MgSO4和Al2(SO4)3的混合溶液中，逐滴加入NaOH溶液。向其中加入足量的Na2O2固體后，溶液中離子濃度基本保持不變的是(假設溶液體積無變化) A．CH3COO B．SO32 C．CO32 D．HCO323．(普)稀硫酸中插一塊銅片，加入下列物質(zhì)后，可使銅片迅速發(fā)生反應的是 A．稀鹽酸 B．硫酸鈉晶體 C．硝酸鉀晶體 D．氯化鈉晶體23．(重) mol﹒L1的HNO3溶液充分反應，還原產(chǎn)物為NO和NO2。向裝置中緩慢地通人氣體X，若關閉活塞K，則品紅試液無變化，而澄清石灰水變渾濁；若打開活塞K，則品紅試液褪色。 ①A與_____組合，用于______， ②B與_____組合，用于______， ③B與_____組合，用于______，④D與_____組合，用于______，26．(1)(普通)(3分)實驗室制取Fe(0H)3膠體的方法是：取一個小燒杯，加入25ml蒸餾水。繼續(xù)______至溶液呈紅褐色，停止加熱，即得到Fe(0H)3膠體。請你設計實驗，鑒別黃銅和黃金。三、推斷題(10分)29．(重點)(10分)已知有以下物質(zhì)相互轉化試回答：(1)寫出B的化學式__________；D的化學式__________。(3)寫出用KSCN鑒別G溶液的現(xiàn)象_________；向G溶液加入A的有關離子反應方程式_________________________________________。試寫出其元素符號：X_______，Y________，Z_________，以及化合物的分子式：XZ______，X2Y__________。五、計算題(本題包括2小題，共9分)31．(3分) 1mol/L FeCl3， 1mol/L KCl溶液中的Cl的數(shù)目之比。32．(重點)(6分)，加入到700mL的稀硫酸中，恰好完全反應，向反應后的溶液中滴人NH4SCN溶液，攪拌均勻，溶液未見紅色。(2)原稀硫酸的物質(zhì)的量濃度。三、推斷題(10分) 29．(重點)(10分，每空2分) (1)FeCl2 KCl (2)4Fe(OH)2+O2+2H2O94Fe(OH)3 (3)出現(xiàn)血紅色溶液2Fe3++Fe93Fe2+ 29．(普通)(10分，每空2分)X：H Y：O Z：Cl XZ：HCl X2Y：H2O四、實驗題(共12分) 30．(12分)(1)(4分)A．F、E、C．D．B (2)(4分)乙中出現(xiàn)白色沉淀．丙中品紅未褪色 (3)(2分)吸收SO2(4)(2分)C+2H2SO4(濃)CO2↑+2SO2↑+2H2O五、計算題(本題包括2小題。 you don39。 your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, seetagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal.Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed underFurther help.If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as at charge you more than 35% of your pensation a damagesbased agreement, you should make sure you39。To find your nearest CAB, including those that give advice by , click onEmployment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s 150th anniversary celebrations and will attend City39。s about how he felt and I would like to speak to him firs
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