1常温下,在27.5g水中溶解12.5g CuSO4·5H2O,恰好达到饱和,该溶液密度为1.21g /cm3,求:①该溶液中阴阳离子的总物质的量___;②该溶液中CuSO4的物质的量浓度___;③取出20.0 mL该溶液,配成浓度为1.00 mol/L的稀溶液,则稀释后溶液的体积是___毫升。 2常温下,在27.5g水中溶解12.5g CuSO4·5H2O,恰好...
The anhydrous form is a pale green or gray-white powder, whereas the pentahydrate (CuSO4*5H2O), the most commonly encountered salt, is bright blue. Copper sulfate exothermically dissolves in water to give the aquo complex [Cu(H2O)6]2+, which has octahedral molecular geometry and i...
Explain the color of CuSO_4 solution after the addition of NH_3. How can you prepare 250 mL of 2.00% (w/v) CuSO4 from CuSO4 5H2O? The cell potential increased with the addition of the Na2S solution to the .001 M CuSO4 solution. Explain. ...
The anhydrous form is a pale green or gray-white powder, whereas the pentahydrate (CuSO4*5H2O), the most commonly encountered salt, is bright blue. Copper sulfate exothermically dissolves in water to give the aquo complex [Cu(H2O)6]2+, which has octahedral molecular geometry and is ...
What color is a copper sulphate solution? Write net ionic equation for the following reaction: C_6H_5CO_2H (aq) + NH_3 (aq) Write the balanced net ionic equation for the reactions that occur when the given aqueous solutions are mixed. Include the physical states. A. copper(II) sulfate...
准确称取Cu2SO4·5H2O(铜的摩尔质量为63.546,CuSO4·5H2O的摩尔质量为249.69)0.3929g,溶于水中,加几滴H2SO4,转入100ml容量瓶中,用水稀释到刻度,摇匀。则此溶液浓度为().A.1mg/mL的CuSO4•5H2OB.1mg/ml的Cu2+C.0.1mg/mL的Cu2+D.0.1mg/mLCuSO4·5H2O的答案是什么.
D. +H2O =Ca(OH)2 查看完整题目与答案 参考解析: A.Cu元素的化合价由+2价降低为+1价,在反应中CuSO4作氧化剂,则“另一种反应物”在反应中作还原剂,具有还原性,故A错误;B.CuH中Cu元素为+1价,既能升高又能降低,所以CuH既可做氧化剂也可做还原剂,故B正确;C.CuH在氯气中能燃烧,Cu元素的化合价升高,...
Then, CuSO4·5H2O (5 mM, 62.5 mg) and H2O2 (19.6 mM, 0.1 mL) were dosed sequentially. The concentration of DA was kept at 2 mg/mL, and the mass ratio of DA/SBMA was 1:15. PU samples were first pre-wetted by ethanol and then immersed in the above solutions in an air ...