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Why do you need to use excess Benedict's reagent if you want to get an idea of the concentration of a sugar solution?
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Which ions is the limiting reagent and which is the reagent in excess when barium sulphate is made?
When barium sulfate is made, the limiting reagent is the one that is completely consumed in the reaction and determines the amount of product formed. In this case, if barium ions (Ba2+) and sulfate ions (SO42−) are the reactants, the limiting reagent would be the one that is present in lower molar quantity. The one in excess would be the one that is present in higher molar quantity. Without the quantities of each ion provided, it is difficult to determine which is the limiting reagent and which is in excess.
3.5 moles of TiCl4 reacts with 4.5 moles of O2 limiting and excess reactants are?
TiCl4 is limiting reagent, O2 is in excess
What is the limiting reactant reagent and what is excess reagent in recrystallization?
The Limiting Reactant is the smaller number once you compare the two reactants with one product. The product that you are comparing them both with must be the same. The Excess Reactant is the larger number, or the amount left over in the chemical reaction.
Can the mass of the limiting reagent be higher than the mass of the excess reagent?
it may be , the limiting reactant is that which is totally consumed during the reaction but its amount must be less than required amount with respect to excess reactant for example, H2SO4 + 2NaOH = Na2SO4 + 2H2O in this reaction suppose acid is 95 g and base is 85 g but acid with higher amount is the limiting reactant and base is in excess. Essentially, it's possible whenever the molecular weight of the limiting reagent is higher than the molecular weights of the other reagents.
Why is it important to stir the mixture all the time when you make an all in one method sauce?
It decreases the amount of time you have to wait to get a complete, uniform reaction. If you are looking for a color change as an indicator, you might have to wait a long time to get a uniform color.
What is blank titration?
Types of titrations 1. Direct titration: analyte + titrant → product 2. Blank titration: titration of a solution not containing the analyte (check for errors) If the endpoint is unclear, we can use a . . . Back titration a. Excess of standard solution is added to analyte (and they react) - Step 1 b. A second standard titrates the excess (unreacted) standard - Step 2 Step 1: analyte + reagent 1 → product + excess reagent 1 Step 2: excess reagent 1 + reagent 2 → product
How is the concentration of hydroxyl ions affected when excess base is dissolved in a solution sodium hydroxide?
The concentration oh hydroxyl ions (OH)- is increased.
How do manufacturers decided which reaction to use in excess in a chemical reaction?
The cheaper reagent is usually the reagent that is used in excess. This procedure is purely for economic reasons.
How do you calculate the percent yield of an element in a reaction?
The actual yield is given within the worded problem. The theoretical yield however is to be found. In order to calculate the theoretical yield, you need to convert the mass of the limiting reagent (LR) to the mass of the reagent in excess (ER). To find the limiting reagent, you need to first convert the mass of the limiting reagent to the mass of the reagent in excess (to find the theoretical yield)A. Convert mass of limiting reagent to mass reagent in excess (mass --> mass); in other words, find the mass of the reagent consumed.1. Multiply the mass of the limiting reagent by the # molecules of the reagent in excess and its molar mass.2. Divide the above by the # of molecules LR which is multiplied by its molar mass.Mass LR x # molecules ER x molar mass ER-- # molecules LR x molar mass LR3. Subtract the original mass of reagent in excess and the consumed reagent in excess.Original mass Reagent in Excess - Consumed Reagent in Excess= Reagent leftover/unused (theoretical yield).B. Find the percent yield of the product.--- Actual YieldTheoretical Yield x 100%
How do you convert an acid to a base?
Increase the hydroxide concentration in the acid by adding an excess of any alkali solution
What is the concentration of chloride ion in 229 mL solution if the addition of excess silver nitrate precipitates 8.07 g silver chloride?
If the addition of excess silver nitrate precipitates 8.07 g silver chloride, the concentration of chloride ion in 229 mL solution is .25.
How do manufacturers decide which reactant to use in excess in a chemical reaction?
The cheaper reagent is usually the reagent that is used in excess. This procedure is purely for economic reasons.
What is a excess reagent?
In most reactions there are two types of reactant. One of them is completely consumed and the other is only partially consumed. The reactant that is only partially consumed is the excess reactant.
Why is an excess reagent frequently used in chemical reactions?
a. Excess Reagent B.Excess Product C.Limiting Reagent D.Limiting product which one?
What happens when excess water enters the plant cell?
If excess water moves into an animal cell, it will eventually burst. This happens if the cell is placed in a hypotonic solution (a solution with a lower solute concentration than the cell).
How does back titration differ from a direct titration?
direct titration involves the direct and stepwise addition of a standard titrant to the analyte whilst the back titration involves reacting a standard excess titrant wth an analyte solution of an unknown concentration, then reacting the excess (left over) titrant with an analyte of known concentration to determine the concentration of excess titrant.
Which ions is the limiting reagent and which is the reagent in excess when barium sulphate is made?
When barium sulfate is made, the limiting reagent is the one that is completely consumed in the reaction and determines the amount of product formed. In this case, if barium ions (Ba2+) and sulfate ions (SO42−) are the reactants, the limiting reagent would be the one that is present in lower molar quantity. The one in excess would be the one that is present in higher molar quantity. Without the quantities of each ion provided, it is difficult to determine which is the limiting reagent and which is in excess.
