الملاحظات |
|
أدوات الموضوع | انواع عرض الموضوع |
#1
|
|||
|
|||
ارجو الحل
Problem1:calculate the ph of each of the following solution:
(A)0.0010 M HCl (B)0.76 M KOH Problem2:calculate the hydrogen ion concentration in mol ⁄ L for solutions with the following pH values: (A)2.42 (B)11.21 (C)6.96 (D)15.00 Problem3:How much NaOH (in grams) is needed to prepare 546 mL of solution with a pH of10.00 ? Problem4:calculate the pH of 1.00 L of the buffer 1.00 M CH3COONa ⁄ 1.00 M CH3COOH before and the addition of : (A)0.080 mol NaOH (B)0.12 mol HCl Assumethat there is no change in volume. Problem5: A solution mad eby mixing 5.00 × 102 mL of 0.167 MNaOH with 5.00 × 102 mL of 0.100 M CH3COOH. Calculate theequilibrium concentrations of H+, CH3COOH, CH3COO-,OH- and Na + Problem 6: Balance the following redoxequations using half reaction method: (A) H2O2 + Fe2+Fe3+ + H2O (B) Cu- + HNO3Cu2++NO + H2O ( C ) CN- + MnO4-CNO-+MnO2 (D) Br2BrO3 - +Br- (E) S2O32-+ I2I-+ S4O62- Problem 7: predict whether the following reaction would occurspontaneously in aqueous solution at 25 C. Assume that the initialconcentrations of dissolved species are all 1.0 M (A) Mg (s) + Pb2+(aq) Mg2+(aq) + Pb(s) (B) Br2 (I) + 2I- (aq) 2Br-(aq) +I2(s) (C ) O2(g) + 4H+(aq)+4Fe2+ (aq) 2H2O(I) + 4Fe3+(aq) (D) 2Al(s) +3I2(s) 2Al3+(aq) +6I- (aq) Problem 8: which spcies in each pairis a better reducing agent under standard state conditions? (A)Na or Li (B) H2 or l2 (C ) Fe2+ or Ag (D) Br- or Co2+ http://i.imgur.com/QR5UtxL.png |
#2
|
|||
|
|||
[QUOTE=bolt;739529]Problem1:calculate the ph of each of the fo
|
#3
|
|||
|
|||
ممكن تقرير عن استخدم الدايود في دوائر الالزام
|
الذين يشاهدون محتوى الموضوع الآن : 1 ( الأعضاء 0 والزوار 1) | |
انواع عرض الموضوع |
العرض العادي |
الانتقال إلى العرض المتطور |
الانتقال إلى العرض الشجري |
|
|