Chemistry Practice One

1. (2011 Chongqing Coil) The following solution of the drops have Phenolphthalein test solution, after operation the color becomes darker is ().

A. Alum Solution Heating

B. Heating $CH _3coona$ Solution

C. Adding a small amount of $nh_4cl$ to ammonia water

D. Adding a small amount of $nacl$ solids to the baking soda solution

2. (2011 Chongqing Roll) Under certain conditions, the change trend of water vapor content in shrimp reaction with reaction time is as shown ().

A. $CO _2 (g) +2nh_3 (g) \rightleftharpoons C0 (nh_2) _2 (s) +h_2o (g) $ $\delta h<0$

B. $CO _2 (g) +h_2 (g) \rightleftharpoons CO (g) +h_2o (g) $ $\delta h>0$

C. $CH _3ch_2oh (g) \rightleftharpoons ch_2=ch_2 (g) +h_2o (g) $ $\delta h>0$

D.$2c_6h_5ch_2ch_3 (g) +o_2 (g) \rightleftharpoons 2c_6h_5ch=ch_2 (g) +2h_2o (g) $ $\delta h<0$

3. (2011 Chongqing Roll) $NM -3$ and $d-58$ are small molecule anticancer drugs in the clinical trial phase, with the following structure:

As for the narrative of $nm-3$ and $d-58$, the error is ().

A. All can react with $naoh$ solution, the reason is not exactly the same

B. Can be reacted with bromine water, the reason is not exactly the same

C. No elimination reaction, the same reason

D. In the case of $fecl_3$ solution are color, the same reason

4. (2015 Chongqing Mid-term) The following material transformations can be achieved under given conditions ().

A.①③⑤

B.②③④

C.①②⑤

D.①④⑤

5. (2014 Chongqing Roll) The use of the following substances does not involve chemical changes is ().

A. Alum used as A purifying agent

B. Liquid ammonia used as refrigerant

C. Hydrofluoric acid Etching Glass

D. Quicklime to make Desiccant

Chemistry Practice One