Write balanced equations for reactions of acids with metals, carbonates Equation (7.4) or bicarbonates, and bases; calculate the molarity or volume of an acid from titration using Concentration as a information.
The typical reactions of acids and bases include the reactions of acids with metals and bases.
H2 and a salt can be produced by acids reacting with certain metals.
Some of the metals that react with acids are iron, zinc, and magnesium.
The metal ion replaces hydrogen in the acid.
H2 and a salt are included in the equation products.
When a metal reacts with an acid, there are hydrogen gas and a salt.
Carbon dioxide gas, water, and a salt can be found when an acid is added to a carbonate.
The acid and OH- combine to form water.
The combination of the cation from the base and the anion from the acid is what makes baking soda react with an salt.
Carbon dioxide gas, water, and a salt are products of the neutralization reaction between HCl and NaOH.
If we write the strong acid HCl and the strong base NaOH as ion, we can see that H+ reacts with OH- to form water, leaving the ion Na+ and Cl- in solution.
One H+ always reacts with one OH- in a neutralization reaction.
The neutralization equation may need coefficients to balance H+ from the acid with the OH- from the base.
2H+ is provided by placing a coefficient of 2 in front of the HCl.
To balance 2H+ and 2OH-, use a coefficient of 2 in front of H2O.
The formula of the salt should be written.
The formula for the salt should be written with the ion Ba2+ and 2Cl-.
Suppose we need to find the molarity of a solution of HCl, which has an unknown concen of an Acid or Base in a Titration.
An indicator is a compound that changes color when the solution's pH changes.
In an acidic solution, phenolphthalein is odorless.
We fill a buret with a NaOH solution of known molarity and then add a NaOH solution to the acid in the flask.
When the phenolphthalein in the solution changes from pink to colorless, neutralization has taken place.
We use the measured volume of the NaOH solution and the measured volume of acid to calculate the number of moles of NaOH and acid.
A measured volume of a base solution, such as NaOH, is placed in a flask with an indicator and measured to the neutralization endpoint.
A sample of an HCl solution is placed in a flask with a few drops of phenolphthalein.
Give and need quantities and concentrations.
A plan is needed to calculate the molarity.
State equalities and conversion factors are included.
To calculate the needed quantity, set up the problem.
Titration of acid anacids is used to remove excess stomach acid.
A mixture of aluminum hydroxide and magnesium is used in antacids.
The Al(OH) levels of available OH- are not harmful to the intestinal tract because they are not verysoluble in water.
Some antacids use calcium carbonate to fight stomach problems.