please clarify what are the answers 1- answer 2- answer 3- answer clearly 4- answer 5-answer...
Please help with 1, 2, 3, 4 & 5 1. 2. 3. 4. 5. Classify the following compounds as weak acids (W) or strong acids (S): hypochlorous acid perchloric acid chloric acid WSS OSSS Sww Owww OWs W A 25.0 mL sample of 0.723 M HClO 4 is titrated with a 0.273 M KOH solution. The H 30 concentration after the addition of 10.0 mL of KOH is М. O 0.440 O 1.00 x 10-7 0.723 O 2.81 x 10-13...
Question 18 4 pts What element is reduced in the following reaction? Mg(s) + 2AgCl(aq) + MgCl2(aq) + 2Ag(s) This is not an oxidation-reduction reaction silver magnesium chlorine If you want to dilute 10.0 mL of a 3.00 M HNO3 solution to a concentration of 0.600 M. what should be the total volume of the diluted solution? 20.0 mL 120 ml 200 ml 60.0 ml 50.0 ml What volume of 0.20 M KOH is required to neutralize 0.25 L of...
1) What is the volume of a 1.20 M HNO3 (aq) solution that contains 0.0420 moles of HNO3 ? 2) What is the volume (in mL) of a 0.125 M Ba(ClO4)2 solution that is needed, to completely react with 20.00 mL of 0.250 M K3PO4 solution according to the reaction below ? 3 Ba(ClO4)2(aq) + 2 K3PO4(aq) → Ba3(PO4)2(s) + 6 KClO4(aq)
Consider the following precipitation reaction: 2 K3PO4 (aq) + 3 Co(NO3)2 (aq) ? Co3(PO4)2 (s) + 6 KNO3 (aq) What volume of 0.222 M K3PO4 (aq) in milliliters is needed to react with 36.75 mL of 0.250 M Co(NO3)2 (aq)? NG 5 6. Consider the following precipitation reaction: 5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) ? 5 Fe3+(aq) + Mn2+(aq) + 4 H2O(l) An iron sample weighing 0.214 g is converted into Fe2+(aq) and requires 31.57 mL of MnO4-(aq) according...
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2. If a buffer solution is 0.200 M in a weak base (?b=5.0×10−5) and 0.530 M in its conjugate acid, what is the ph 3. Phosphoric acid is a triprotic acid (?a1=6.9×10−3, ?a2=6.2×10−8 , and ?a3=4.8×10−13 To find the pH of a buffer composed of H2PO4 - (aq) ) and HPO4 2− (aq) , which...
Consider the reaction: 2K3PO4(aq)+3NiCl2(aq)→ Ni3(PO4)2(s)+6KCl(aq) What volume of 0.205 M K3PO4 solution is necessary to completely react with 154 mL of 0.0116 M NiCl2?
Consider the reaction: 2K3PO4(aq)+3NiCl2(aq)→ Ni3(PO4)2(s)+6KCl(aq) What volume of 0.205 M K3PO4 solution is necessary to completely react with 122 mL of 0.0120 M NiCl2?
Consider the reaction: 2K3PO4(aq)+3NiCl2(aq)→ Ni3(PO4)2(s)+6KCl(aq) What volume of 0.205 M K3PO4 solution is necessary to completely react with 146 mL of 0.0122 M NiCl2?
2K3PO4(aq)+3NiCl2(aq)→ Ni3(PO4)2(s)+6KCl(aq) Part A What volume of 0.205 M K3PO4 solution is necessary to completely react with 150 mL of 0.0106 M NiCl2?
can someone help answer this please? Experiment 2 - Preparation of Alum Evaluation Question 1 Part (a) Calculate the volume of 1.0 M KOH solution required to completely dissolve 0.5589 g of aluminium. The balanced chemi follows: 2Al(s) + 2KOH(aq) + 6H2O(0) -> 2Al(OH)4 (aq) + 2K+ (aq) + 3H2(g) (Please give your answer to 2 significant figures.) mL KOH Check Answer Part (b) The 0.5589 g of aluminium metal from Part (a), reacted with excess potassium hydroxide to produce...