urgent 9) For which of the following substances does phosphorus (P) have the largest value for...
9) For which of the following substances does phosphorus (P) have the largest value for oxidation number? a) Na3P b) H3PO4 c) PF3 d) P4 e) PO33-
9) For which of the following substances does phosphorus (P) have the largest value for oxidation number? a) Na P b) H3PO4 c) PF3 d) P e) PO;- 10) Which of the following is always true for the oxidation numbers in an oxidation-reduction reaction? a) The value for the oxidation number for atoms of the element being oxidized must increase as we go from reactants to products b) The initial value for the oxidation number for atoms of the element...
8) A buffer solution is formed by adding 0.0100 moles of potassium dihydrogen phosphate (KH2PO4) and 0.0100 moles of potassium hydrogen phosphate (K2HPO4) into 1.000 liters of water. When 0.0010 moles of NaOH is added to this solution, what will happen? The pH of the solution will decrease by a large amount ( > 0.10 pH units) The pH of the solution will decrease by a small amount (< 0.10 pH units) The pH of the solution will be exactly...
7) For the chemical reaction NH3(aq) + HCl(aq) + NH4" (aq) + Cl(aq) the acid and conjugate base are a) NH; (acid); C (conjugate base) b) NH; (acid); NH4 (conjugate base) c) HCI (acid); Cl"(conjugate base) d) HCI (acid): NH (conjugate base) e) HCI (acid); NHA (conjugate base) 8) A buffer solution is formed by adding 0.0100 moles of potassium dihydrogen phosphate (KH_PO4) and 0.0100 moles of potassium hydrogen phosphate (K,HPO) into 1.000 liters of water. When 0.0010 moles of...
7) For the chemical reaction NH(aq) + HCl(aq) → NH"(aq) + Cl(aq) the acid and conjugate base are a)NH(acid): NH" (conjugate base) b) NH, (acid), CT (conjugate base) c) HCl(acid); NH (conjugate base) d) HCl(acid), NH, (conjugate base) c) HCI (acid) Conjugate base) 8) A buffer solution is formed by adding 0.0100 moles of potassium dihydrogen phosphate (KH-PO.) and 0.0100 moles of potassium hydrogen phosphate (K_HPO) into 1.000 liters of water. When 0.0010 moles of NaOH is added to this...
7) A buffer solution is formed by adding 0.0100 moles of potassium dihydrogen phosphate (KH2PO4) and 0.0100 moles of potassium hydrogen phosphate (K_HPO4) into 1.000 liters of water. When 0.0010 moles of NaOH is added to this solution, what will happen? a) The pH of the solution will increase by a small amount (< 0.10 pH units) b) The pH of the solution will increase by a large amount > 0.10 pH units) c) The pH of the solution will...
1. Which ONE of the following lists gives the correct symbols for the elements phosphorus, potassium, silver, chlorine, and sulfur in that order? A) K, Ag, Po, Cl, S B) P, Po, Ag, CI, S C) Ph, K, Ag, S, Cl D) E) P, K, Ag, Cl, S Ph, Po, Ag, CI,S 2. Which of the following is NOT a correct name-symbol combination? A) beryllium, Be B) boron, B C) cobalt, Co D) magnesium, Mn E) copper, Cu 3. If...
urgent 10) Which of the following is always true for the oxidation numbers in an oxidation-reduction reaction? a) The final value for the oxidation number for atoms of the element being oxidized must be positive b) The initial value for the oxidation number for atoms of the element being oxidized must be positive c) The value for the oxidation number for atoms of the element being oxidized must increase as we go from reactants to products d) Both a and...
urgent 2) Which of the following makes formation of a solution from two pure chemical substances more likely to occur? a) If randomness increases when a solution forms b) If energy decreases when a solution forms c) If energy increases when a solution forms d) Both a and b e) Both a and c
2. Indicate the oxidation number of phosphorus, iodine, nitrogen, tellurium, and sili- con in the following ions. a. PO d. P010 b. PO, c. HPO f. I0, g. IO j. NO, h.NH, k. NO* i. NO, L NO, 5- N,O22 TeO2 Sio,2 m. 10, e. n. O.