How many grams of phosphoric acid, H3PO4, must be added to remove (or react with) 15.0 g of rust, Fe2O3?
2H3PO4 (aq) + Fe2O3 (s) à 2FePO4 (s) + 3 H2O (l)
STEP 1
15.0 g Fe2O3 -------------------------> _?_ g H3PO4
How many grams of phosphoric acid, H3PO4, must be added to remove (or react with) 15.0 g of rust, Fe2O3? 2H3PO4 (aq) + F...
One of the uses of oxalic acid, (H2C2O4) is rust removal. It reacts with rust, (Fe2O3) according to the equation: 2Fe2O3(s) + 6H2C2O4(aq) = 2Fe2(C2O4)3^-3(aq) + 3H2O(l) + 6H+(aq) Calculate the number of grams of rust that can be removed by 5x10^2mL of a 0.100 mol L-1 solution of oxalic acid.
Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching agent for cavity repair by dentists, can be made from elemental phosphorus in a two step process. In the first step, phosphorus and oxygen react to form diphosphorus pentoxide: P4(s) + 502(g) → 2P205(8) In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H2PO4): P2O3(g) + 3 H20(1) ► 2H3PO4(1) Suppose the yield of the first step is 75.%...
One of the main components of rust is a hydrated iron (III) oxide – Fe2O3•nH2O. This compound can react with acids such as hydrochloric acid. The unbalanced reaction is shown below: Fe2O3•nH2O(s) + HCl(aq) FeCl3(aq) + H2O(l) If it takes 103 mL of 1.25 M HCl to completely react with 5.00 grams of Fe2O3•nH2O then what is the value of n? You must show all of your work to receive any credit. Round your value of n to the...
16. How many grams of steam and iron must react to produce 375 g of magnetic iron oxide, Fe3O4? 3 Fe(s) + 4 H2O(g) Fe3O4(s) + 4 H2(g) 18. Mercury can be isolated from its ore by the reaction 4 HgS + 4 CaO → 4 Hg + 3 CaS + CaSO4 (a) How many moles of CaS are produced from 2.5 mol CaO? (b) How many grams of Hg are produced along with 9.75 mol of CaSO4? (c) How many...
how many grams of CO are needed to react with 3.03 g of Fe2O3? How many grams of Co are needed to react with 1.77 mol of Fe2O3?
How many hydrogen atoms are in 0.1488 g of phosphoric acid , H3PO4 ?
Phosphoric acid, H3PO4,H3PO4, has some important applications. It can be used to produce fertilizers and it is present in soft drinks. Phosphoric acid can be made from phosphorus in a two step process: Reaction 1: P4+5O2→P4O10P4+5O2→P4O10 Reaction 2: P4O10+6H2O→4H3PO4P4O10+6H2O→4H3PO4 What is the molar mass of phosphoric acid, H3PO4?H3PO4? Report your answer to 3 significant figures. g/mol How many moles of H3PO4H3PO4 can be produced from one mole of P4P4 ? Hint: You need to look at both reaction (1) and reaction (2). Your answer should...
6) There is 15.0 g of ice at 0.0C. How many grams of water at 50.0C must be added to the ice to melt all the ice and keep the temperature of the mixture at 0.OC? H2O(s)= 2.06J/gc Specific heat: H2O(0) = (4.18 J/g C) H20 heat of vaporization=2260 J/g H2O(g)=(2.03 J/g C) H2O heat of fusion=333 J/g b)25 8 c)23.98 d)7. 58 )0.428
2 P2S5(s) +16 H2O (l) -> 4 H3PO4 (aq) + 10 H2S (g) H2S production reaction Fe2O3 + 3 H2S -> Fe2S3 +3 H2O H2S neutralizing reaction In the above production reaction, if the pH is 5 ( of the H3PO4 solution) how many moles of H2S would be present? How many moles of Fe2O3 would thus be required to neutralize this many moles of H2S at ph 5?
How much water is produced when 0.0320 g of phosphoric acid reacts? Choose the answer with the appropriate significant figures and unit. 0.0177 g H200) 0.0320 g H200) 0.0580 g H3PO4(aq) 0.018 g H200) 0.058 g H3PO4(aq) Cu(s) + 2AgNO3(aq) → 2Ag(s) + Cu(NO3)2(aq) Calculate the mass of copper needed to react with 5.7120 g AgNOa(aq). Choose the answers with the appropriate significant figures and unit. Selectl Select )