Answer A pH value of less than 7 indicates an acidic solution, while greater than 7 indicates a basic solution. Convert the reactant and product masses to moles and deduced the balanced equation.
Record the pH value. What conclusions can be made from the results of your investigation? Under what soil condition do you think a farmer would treat the soil of his fields with quick lime calcium oxide or slaked lime calcium hydroxide or chalk calcium carbonate?
Be careful when handling this solution; even though it is dilute it can still cause burns. A useful site to find out more about some chemistry-related careers http: The final mass of the iron oxide was Record your results in the following table: The bubbles of the soap solution are formed.
Can you remember what density means? Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The acid of our reaction was hydrochloric acid. Which of this is acidic and which one is basic? Which gas is usually liberated when an acid reacts with a metal? One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively.
You should understand and how to use measurement of the amounts in moles and apply this knowledge to calculations involving atoms, molecules, ions, electrons, formulae and equations.
Pharmacists are health professionals and have specialist training in the health sciences as well as the chemical sciences. How many H on the left and right? What question s do you hope to answer with this investigation?
Some careers involving chemistry: Look up these careers to identify the main difference between a chemist and a pharmacist and summarise them below: Bubbles came out of the end of the gas delivery tube. Write what you know in the space below. Calculate its molecular mass.
Since the numbers of each type of atom is the same on either side of the equation, we can confirm that it is balanced. What do you predict will happen? When hydrogen gas is released in a reaction it will immediately rise up, because hydrogen is less dense than air.
In this chapter we will investigate one final type of reaction, namely the reaction between an acid and a metal. These could be new medicines, innovative building materials, new fuels that do not harm the environment and many others.
The mole concept is an invaluable way of solving many quantitative problems in chemistry! Answer Since the process of dissolving an acid in water is exothermic, it is always recommended that acid should be added to water.
The latter is a better way to look at ammonia formation because nitrogen and hydrogen exist as diatomic molecules and NOT individual atoms. You have been provided with three test tubes.
Answer Curd and other sour substances contain acids. Why does dry HCl gas not change the colour of the dry litmus paper? The latter consists of 2 x 6.
O2 ratio to the simplest whole number ratio Fe: When magnesium reacts with hydrochloric acid, a gas is released. Testing for hydrogen gas This activity introduces the test for hydrogen gas.
What will happen if a solution of sodium hydrocarbonate is heated? H2 Hydrogen gas is a diatomic gas. Do an internet search to find out what each career is.
Have a look through the list and then select the five careers you find most interesting. If you are given only red litmus paper, how will you identify the contents of each test tube?Get an answer for 'What is the net ionic equation for this reaction: CaSO4+HCl?' and find homework help for other Science questions at eNotes.
Set 3 of mole calculations - deducing a balanced symbol equation from the masses of reactants and products. Since you can interpret equations in terms of moles and masses of reactants and products, you can also work in the other direction.
Get an answer for 'What is the ionic equation of NaOH + HCl -> H2O +NaCl' and find homework help for other Science questions at eNotes. NCERT Solutions for Class 10th: Ch 2 Acids, Bases and Salts Science In Text Questions Page No: 18 1.
You have been provided with three test tubes. Indicators for Strong Acid - Strong Base Titrations An aqueous solution of hydrochloric acid, HCl(aq), is a strong acid.
An aqueous solution of sodium hydroxide, NaOH(aq), is a strong base. The balanced chemical equation below represents the neutralisation reaction between HCl(aq) and NaOH(aq): HCl (aq) + NaOH (aq) → NaCl (aq) + H 2 O (l) At the equivalence point of the neutralisation.
What do we get when a metal reacts with an acid? What is the general equation for the reaction between a metal and an acid? How do we write the word equation and the balanced chemical equation?Download