How do you titrate NaOH with HCl?
Place the flask on a white tile or piece of clean white paper under the burette tap. Add the hydrochloric acid to the sodium hydroxide solution in small volumes, swirling gently after each addition. Continue until the solution just turns from yellow-orange to red and record the reading on the burette at this point.
What happens when sodium hydroxide reacts with HCl?
Reactions of Acids and Bases A salt is a neutral ionic compound. Let’s see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH + HCl → H2O and NaCl.
Which indicator is used in the titration of NaOH and HCl?
phenolphthalein
For a weak acid vs strong alkali titration, phenolphthalein is the most suitable indicator. This is so because the last drop of added alkali brings the pH of the solution in the range in which phenolphthalein shows sharp colour change.
How do you find the concentration of HCl from titration with NaOH?
- Volume of sodium hydroxide solution = 25.00 ÷ 1000 = 0.0250 dm 3
- Amount of sodium hydroxide = 0.200 × 0.0250 = 0.005 mol.
- From the equation, 0.005 mol of NaOH reacts with 0.005 mol of HCl.
- Volume of hydrochloric acid = 22.70 ÷ 1000 = 0.0227 dm 3
- Concentration of hydrochloric acid = 0.005 mol ÷ 0.0227.
- = 0.220 mol/dm 3
Why HCl is used in titration?
Hydrochloric acid (HCl) is usually not used in the process of titration because it reacts with the indicator potassium permanganate (KMnO4) that is used in the process. It reacts with KMnO4 solution and gets oxidized which further results in the liberation of chlorine gas.
When NaOH and HCl are mixed together in equal quantities the result is?
When equal volumes of hydrochloric acid (strong acid) and sodium hydroxide (strong base) solution of same concentration are mixed, the result is salt and water. This is a neutralisation reaction.
What is the chemical equation for HCl and NaOH?
NaOH + HCl → NaCl + H2O 2.
What is observed when sodium hydroxide is added to hydrochloric acid and phenolphthalein?
On adding nearly 5 mL sodium hydroxide solution to the mixture of hydrochloric acid and phenolphthalein solution, the colour of the mixture changes to pink. On addition of hydrochloric acid solution to the pink solution, the colour starts fading gradually and finally the solution becomes colourless.
Is HCl can be titrated with NaOH directly?
While there are many different types of titrations, acid-base titrations are the most common. Consider this example in which a sample of hydrochloric acid (HCl) is titrated with sodium hydroxide (NaOH). During the course of the titration, the titrant (NaOH) is added slowly to the unknown solution.
What is the concentration of HCl?
Hydrochloric acid (HCl) is supplied commercially at concentrations mainly within the range 28–36% w/w.
What happens when HCl reacts with water?
When HCl is added to water, it donates an H+ ion to the water, leaving a Cl- ion in solution. This increases the H+ activity of the solution without increasing the concentration of OH- ions in the solution. Hence, the pH of water becomes more acidic; as you add an increasing amount of HCl, the pH gets lower.
What are the uses of HCl?
Oil production. HCL is used in the fracking process and in many gases and oil extraction processes to acidify a well to remove carbonate reservoirs, or limestones, from the rock or combined with other materials to dissolve quartz, sand and clay from rocks.
Is HCL an organic compound?
Answer: HCl ( Hydrochloric acid ) is an Inorganic compound. What is Organic compound and Inorganic compound? Organic compound. An organic compound is virtually any chemical compound that contains carbon, although a consensus definition remains elusive and likely arbitrary.
What is the charge on hydrochloric acid?
HCl (hydrochloric acid) is a polar molecule because the chlorine is more electronegative than hydrogen due to which it attracts the bonded electron pair slightly nearer to it and gains a partial negative charge and hydrogen gains a partial positive charge. The dipole moment of HCl turns out to be 1.03 D.