Chemistry

posted by .

This is for a titration, to measure the amount of acid that can be neutralised by gaviscon. I know how to work out the first 3 but I'm not sure on the others.
I think i need to use the calculation c=n x v but i don't know where and why?
Theory. How do you work them out?

(i)Calculate the amount (in moles) of sodium hydroxide used in the titration
(ii)Write the balanced equation for the reaction between sodium hydroxide and hydrochloric acid
(iii)State the amount (in moles) of hydrochloric acid present in the 20cm³ sample used in the titration
(iv)Calculate the amount (in moles) of hydrochloric acid remaining in the solution made with the gaviscon tablet
(v)Calculate the amount (in moles) initially used to react with the tablet
(vi)Calculate the amount (in moles) of hydrochloric acid that reacted with the tablet
(vii)Assuming that the tablet contains an insoluble metal hydroxide, calculate the amount (in moles) of hydroxide ions present in each tablet

  • Chemistry -

    i)Calculate the amount (in moles) of sodium hydroxide used in the titration
    mols NaOH = M x L

    (ii)Write the balanced equation for the reaction between sodium hydroxide and hydrochloric acid
    NaOH + HCl ==> NaCl + H2O

    (iii)State the amount (in moles) of hydrochloric acid present in the 20cm³ sample used in the titration
    <mols HCl = M x 0.020 L.
    There isn't enough information given to calcualte the others. It appears that you added HCl (an excess) to the commercial tablet and back titrated with NaOH
    (iv)Calculate the amount (in moles) of hydrochloric acid remaining in the solution made with the gaviscon tablet
    (v)Calculate the amount (in moles) initially used to react with the tablet
    (vi)Calculate the amount (in moles) of hydrochloric acid that reacted with the tablet
    (vii)Assuming that the tablet contains an insoluble metal hydroxide, calculate the amount (in moles) of hydroxide ions present in each tablet

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chem+ASAP+2 fill in the blank questions+ASAP!!!

    PLease check this. They are fill in the blank and I just need to know if they are right. Thanks! 9. Compared to a strong acid-strong base titration curve, a weak acid-strong base titration curve has a (higher, lower) __higher___ initial …
  2. Chemistry - Acid Base Titration

    When you complete a acid base titration of NaOH and HCl and how to you find the molarity/concentration of HCl. I used 9 mL of HCl with 50 mL of water. But when solving for concentration, do I use 9 mL or 59 mL (water + HCl)?
  3. Biology

    I need to find a way to measure protein concentration. It's for part of my infection and immunity lab report. We've done about radial immunodiffusion calculating the concentration of bovine serum albumin in unknown samples, and the …
  4. Chemistry (A level)

    I was given a Chemistry question on the titration of a strong base being added to a weak acid. The question was: "Calculate the pH in a titration when 10.0cm^3 of a 0.10moldm^-3 solution of NaOH is added to a 10.0cm^3 of 0.25moldm^-3 …
  5. Chemistry

    Expt #1- Molecular Weight of Unknown Acid Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of acid titrated with NaOH: 25.00 mL Average volume …
  6. Chemistry

    Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of acid titrated with NaOH: 25.00 mL Average volume of Naoh from titration: 13.9 mL Here's …
  7. chemistry

    You discovered a new diprotic acid, which you have named edmontonic acid. You want to characterize the pKa’s of edmontonic acid, so you perform a titration experiment. Your data are summarized in the table below. Your titration sample …
  8. Chemistry

    To increase the acidity of soil, you can add peat, which contains a complex acid mixture known as humic acid. The complexity of the humic acid makes it difficult to determine how acidic you are making the soil. You decide to use a …
  9. Chemistry

    We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15 mL. From this molarity and volume, the moles of NaOH can be calculated. …
  10. Chem

    We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15 mL. From this molarity and volume, the moles of NaOH can be calculated. …

More Similar Questions