How many milliliters of a 10.6 M NaOH solution are required to prepare a 0.715 L solution of NaOH with a concentration of 0.550 M? What volume of a 0.200 M NaOH solution is required to completely neutralize 50.0 mL of a 0.199 M HCl solution? How many...
百度试题 结果1 题目16. Calculate the mass of KOH used to prepare200cm^3s solution with a pH =11.0 at 298 K. 相关知识点: 试题来源: 解析 0.0112 g. 反馈 收藏
When 2.5 mL of 0,5 M NaOH solution is diluted into 10 mL, what is the pH of the diluted solution? When 2.5 mL of 0,5 M HCl solution is diluted into 10 mL, what is the pH of the diluted solution? Find PH A solution made by diluting 50 mL of 6.0 M HC...
The eluate is a mixture of KOH and K2CO3; (4) Carbon decomposition: Acidification gas CO2is introduced into the crude dissolution liquid. During the reaction process, sampling points are designed to monitor the changes in pH value of the solution, and the pH value of the solution is monitor...
Ao and co-workers prepared Fe-doped Co9S8 nanosheets grown on carbon cloth with a small Tafel slope of 95.3 mV dec−1 and the low overpotential of 83 mV to achieve 10 mA cm−2 for efficient hydrogen evolution in 1.0 M KOH solution [22]. 2D MOFs can be an ideal template to ...
After the pH of the solution reaches neutral, the activated carbon is dried at the temperature of 105 ℃ for 24 hours [2]. Method 2 The corn cob was soaked in ethyl alcohol for 5 days to remove impurities. After drying, the corn cob was soaked in 10% sulfuric acid and heated at...
How many grams of {eq}\mathrm{NaHCO_3} {/eq} should be added to one liter of {eq}0.100 \, \mathrm{M} \; \mathrm{H_2CO_3} {/eq} ({eq}\mathrm{Ka} = 4.2 \times 10^{-7} {/eq}) to prepare a buffer with {eq}\...
In this work, argy wormwood-based porous carbon electrode materials for high-performance supercapacitors are prepared through HPOsolution hydrothermal carbonization and subsequent KOH activation. The obtained carbon has a specific surface area (SSA) of 927 mg, a total pore volume of 0.56 cmg, and a...
Potassium HEDP (K4HEDP) was synthesized by adding 90 g of KOH to an aqueous solution of HEDP previously formed by adding 200 g of water to 108 g of the 60 weight % aqueous solution of HEDP under stirring. The obtained clear solution had a pH of 12.0 and a concentration of K4HEDP of...
In the catalytic tests, 1 mL of 4−NP solution (14 mM) was added to a bottle containing 10 mg of catalyst powder, 1 mL of NaBH4 solution (0.42 M), and 7 mL of distilled water as the solvent. To satisfy first-order reaction kinetics, the initial concentration of NaBH4 (0.047 M) ...