Answer: A. The reaction takes place in one step.
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
Molecularity of the reaction is defined as the number of atoms, ions or molecules that must colloid with one another simultaneously so as to result into a chemical reaction.
Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.
Elementary reactions are defined as the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical reaction.
![aA=bB\rightarrow cC+dD](https://tex.z-dn.net/?f=aA%3DbB%5Crightarrow%20cC%2BdD)
k= rate constant
a= order with respect to A
b = order with respect to B
Answer: B. Allow light to pass through. :)
Answer: c.
Electrons are transferred → Ions form → Ions are attracted to each other
have a great day
Explanation:
Complete Question:
Sodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid (HCl), which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HCl through this reaction: HCl (aq) + NaHCO3 (aq)--> NaCl (aq) + H2O (I) + CO2 (g).
The CO2 gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 50.0 mL of a 0.034 M HCl solution. What mass of NaHCO3 would he need to ingest to neutralize this much HCl? Be sure your answer has the correct number of significant digits.
Answer:
0.143 g
Explanation:
The balanced reaction of neutralization is:
HCl(aq) + NaHCO3 (aq)--> NaCl(aq) + H2O(I) + CO2(g)
Thus, by the stoichiometry, it is necessary 1 mol of NaHCO3 neutralizes 1 mol of HCl. The number of moles of HCl presented in the stomach is the volume (50.0 mL = 0.05 L) multiplied by the concentration (0.034 M), which is 0.0017 mol.
So, it's necessary 0.0017 mol of baking soda. The molar mass of it is 84 g/mol, so the mass needed is the molar mass multiplied by the number of moles:
m = 84 * 0.0017
m = 0.143 g
Use the nernst equation : <span><span>E<span>cell</span></span>=E−<span><span>RT</span><span>nF</span></span>ln<span><span>[F<span>e<span>3+</span><span>out</span></span>]</span><span>[F<span>e<span>3+</span><span>in</span></span>]</span></span></span>
At eq. <span>ΔG=0=−nF<span>E<span>cell</span></span>→<span>E<span>cell</span></span>=0</span>
and thus: <span>E=<span><span>RT</span><span>nF</span></span>ln<span><span>[F<span>e<span>3+</span><span>out</span></span>]</span><span>[F<span>e<span>3+</span><span>in</span></span>]</span></span></span>