1) H+(aq) + OH-(aq) → H2O(l) 2)no of mole of the acid=25/1000x0.2=0.005mol no of mole of NAOH=20/1000x0.5=0.01mol according to the equation the mole ratio of H+(aq) : OH-(aq)=1:1 so the NAOH is in excess and the acid is the limiting reactant so ...
The concentration of Pb2+ (aq) in the saturated solution is found to be 1.3 × 10 − 3 M . The chemical equation for the dissolution of PbI2(s) in water is shown below. PbI → 2+ − 2(s) ← Pb (aq) + 2 I (aq) (i) Write the equilibrium-constant expression for the ...
10年高考常考化学方程式及其离子反应方程1(The chemistry equation and its ion reaction equation are often tested in the 10 year college entrance examination. 1).doc,10年高考常考化学方程式及其离子反应方程1(The chemistry equation and its ion reaction equat
Maple Quantum Chemistry Toolbox The Maple Quantum Chemistry Toolbox from RDMChem , a separate add-on product to Maple, is a powerful environment for the computation and visualization of the electronic structure of molecules. In Maple 2021, this toolbox..
Problem 2: What is the equilibrium concentration of bromide ion when enough PbBr2 dissociates in water to make a saturated solution? Ksp (PbBr2) = 2.1 × 10-6. Solution: In the equation for the dissociation of CaCO3, we see that the concentration of Ca+2 and CO32- must be the same...
Chemists usually prefer to write ionic equations for precipitation reactions. A precipitation reaction is a reaction where two aqueous solutions react to form a solid –the precipitate. For these reactions the method of writing the ionic equation can be simplified. All you have to do is: ...
Choose one of the following for questions 1–4.(A) There is no change in the voltage.(B) The voltage becomes zero.(C) The voltage increases.(D) The voltage decreases, but stays positive.(E) The voltage becomes negative.The following reaction takes place in a voltaic cell.Zn(s) + Cu...
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In 1909, Danish biochemist Søren Peter Lauritz Sørense proposed the following equation forcalculating pH: pH = -log[H+] where log is the base-10 logarithm and [H+] stands for the hydrogen ion concentration in units of moles per liter solution. The term "pH" comes from the German ...
In order for the reaction 2Al + 6HCl → 2AlCl₃ + 3H₂ to occur, which of the following must be true? Al must be above H on the activity series. When the equation for the complete combustion of one mole of C₃H₇OH is balanced, the coefficient ...