CHEMISTRY HELP PLEASE! balancing equations?
Hey, I really need help answering some questions by tomorrow. Please and thank you :-) 55. Write a balanced chemical equation for the synthesis of liquid phosphorus trichloride, PCl3, from white phosphorus, P4, and chlorine gas. 56. Tell what type of chemical reaction is represented by the following formula equation. Then balance. C3H8(g) + O2(g)--->CO2(g) + H2O(l) (the delta sign is supposed to be over the arrow but i don't know how to write it) 57. What kind of reaction is represented by the following formula equation. then balance. KBr(aq)+Mg(OH)2(aq)-->KOH(aq)+MgBr2(aq) 58. Use the activity series to determine if the following reaction is possible. If possible, write the products and balance the equation. If not, explain. 4Cr(s)+3O2(g)---> 59. Use the activity series to determine if the following reaction is possible. If possible, write the products and balance the equation. If not, explain. 2Sb+6HCl---> 60.Use the activity series to determine if the following reaction is possible. If possible, write the products and balance the equation. If not, explain. 2K(s)+ZnCl2(aq)---> Even if you can only answer a couple of these, it would be a great help. Thank you :)
When the following chemical equation is balanced, what is the coefficient of the POCl3?
The balanced form of the equation is: O2 + 2PCl3 => 2POCl3 The coefficient of POCl3 is 2.
Chemistry: How do you write a balanced equation for the combustion of ethanol?
Since it is unclear whether complete or incomplete combustion, I'll write down both.Complete combustion:[math]\text{C}_2\text{H}_5\text{OH} +6\text{O}_2 \rightarrow \text{2CO}_2+3\text{H}_2\text{O}[/math]Incomplete combustion:[math]\text{C}_2\text{H}_5\text{OH} +4\text{O}_2 \rightarrow \text{2CO}+3\text{H}_2\text{O}[/math][math]\text{C}_2\text{H}_5\text{OH} +2\text{O}_2 \rightarrow \text{2C}+3\text{H}_2\text{O}[/math]
Which equation is showing a conservative of mass: Na + Cl2 --->NaCl or Al + Br2 --->AlBr3 or either H2O ---> H2 + O2 also is it PCl5 ----> PCL3 + CL2?
Mass conservation is real phenomena. It does not changes with the way you write the equation. But A chemical reaction will be correct only if it is wriiten in balanced form i.e. no. of atoms in reactant side = no. of atoms on product side And all the balanced chemical reactions represent conservation of mass. Mass conservation principle is basis for all the possible things that you can imagine in chemical engineering/Chemistry etc.So according to your question, All the equation that you have written are not chemical reaction except PCL5 -----> PCL3 + CL2. Last equation is showing conservation of mass.
What does the equation NaOH + H2O yield?
The question was - What does the equation NaOH + H2O yield?If you combine the physical items, you will get the following exothermic reaction: NaOH(s) + H2O(l) => Na+ + OH- + H20 + HEATThanks for the A2A.
When it is correctly balanced, the correct coefficients for the equation below are PCl3 + H2O ----> H3PO3?
Incomplete. The chlorine and part of the hydrogen on the reactant side is not accounted for on the product side. My guess is that the complete reaction (with coefficients) should be PCl3 + 3H2O --> H3PO3 + 3HCl ib's answer, with the other product being Cl2 instead of HCl, leaves the oxygen unbalanced. Furthermore, if you balance the oxygen, the hydrogen will then be off.
Write a balanced equation for the synthesis of liquid phosphorus tri chloride, PCl3 from white phosphorus P4 a?
First, write out the equation without coefficients. P4 + Cl2 -----> PCl3 Since we have 4 atoms of phosphorous on the left side of the equation, we'll also need 4 atoms on the right. Put a 4 in front of the PCl3 molecule to balance phosphorous: P4 + Cl2 ----> 4 PCl3 But now chlorine is unbalanced! We have 4*3=12 atoms of chlorine on the right. To get 12 atoms on the left, we need to put a 6 in front of the Cl2: P4 + 6 Cl2 -----> 4 PCl3 And now everything is balanced! Yay! If you want to put phase symbols in for fun, it'd look like: P4 (s) + 6 Cl2 (g) -----> 4 PCl3 (l)
If 46g of PCL3 is produced by the reaction 6Cl2 + P4 -> 4PCL3, how many grams each of Cl2 and P4 are consumed?
This is basic stoichiometry problemConsider the equation:P4+6Cl2------->4PCl3 (molar mass 137.5)Therefore for1 mol of P4 -------> we get 4 mol of PCl3 Hence for (46/137.5) mol of PCl3 we get:(1/4) x (46/137.5) moles of P4 = 0.0836 moles of P4Now for mass of P4 generatedJust multiply moles obtained by molar mass of P4 (124)This implies 0.0836 x 124 = 10.36 gms of P4.On the similar note practice for yourself on obtaining Cl2 consumed. I am leaving the answer here.35.62 gmsHope this helps!!
Standard Molar Entropy - Chemistry?
For this problem, we are ultimately using the equation: ΔG = ΔH - TΔS Given: ΔH° = -620.2 kJ at 298K Using the given standard molar entropies, we can determine ΔS ΔS = [sum of products] - [sum of reactants] = [2(POCl3)] - [2(PCl3) + O2] ΔS = [2(222.4)] - [2(311.8) + 205] = -383.8J = -0.3838kJ Now we can plug and chug into the equation: ΔG = ΔH - TΔS ΔG = -620.2 - (298)(-0.3838) = -506 kJ When ΔG is negative, the reaction proceeds spontaneously in the forward direction. Therefore, the reaction is spontaneous.