9 Answered Questions for the topic Chemical Equations
What is the balanced chemical equation for the following chemical reaction? Copper (ii) oxide when heated in the presence of methane (CH4) gas produces copper, carbon dioxide and water vapor.
Sodium hydroxide is used extensively in acid-base titrations because it is a strong, inexpensive base. A sodium hydroxide solution was standardized by titrating 42.18 mL of 0.1753 M...
standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 1.08 mL, and the final reading was 31.51 mL. What was the molarity of the base solution? I got 0.2212 M but it... more
The mass percent of Cl− in a seawater sample is determined by titrating 25.00 mL of seawater with AgNO3 solution, causing a precipitation reaction....
An indicator is used to detect the endpoint, which occurs when a free Ag+ ion is present in a solution after all the Cl− has reacted. If 57.50 mL of 0.2036 M AgNO3 is required to reach the... more
Fe2O3 + 3C -> 3CO+2Fe: If 1.4151 moles of C are reacted, how many grams of Fe will be produced?
what is the ΔS Zn of this equation (s) + HCl (aq) → ZnCl2 (aq) + H2 (g)
is it positive or negative
How to solve chemical equations? For eg: mg+2Hcl MgCL2+H2
how do i deduce the moles of the acid reacted with sodium carbonate
The balanced equation is: Na2CO3 + 2HCl ----> 2NaCl + H2O + CO2Moles of sodium carbonate: 0.03945average volume of acid added: 26.3 cm3Acid = HClThis is standardisation of an acid (titration 1)
Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g) how many moles of Mg are there? how many moles of hydrogen gas?
What does a double-headed arrow mean in a chemical equation?? PLEASE HELP!!! I AM LOST?
I am doing a lab where the chemical reaction is Fe^+3 (aq) + NCS^-1 (aq)<--- FeNCS^+2 (aq) ... more