Acid + Base Class # 1
... 51. First, the pH scale is a logarithm scale. That means small changes in numbers are really changes in EXPONENTS. Just like the Richter scale you learned about in Earth Science. An earthquake of 2.0 will shake you and might make you feel dizzy. A quake of 3.0 is TEN TIMES as strong, and will shake ...
... 51. First, the pH scale is a logarithm scale. That means small changes in numbers are really changes in EXPONENTS. Just like the Richter scale you learned about in Earth Science. An earthquake of 2.0 will shake you and might make you feel dizzy. A quake of 3.0 is TEN TIMES as strong, and will shake ...
KEY - Unit 10 - Practice Questions
... 41. Under standard conditions, which metal will react with 0.1 M HCl to liberate hydrogen gas? (1) Ag (2) Au (3) Cu (4) Mg 42. Because tap water is slightly acidic, water pipes made of iron corrode over time, as shown by the balanced ionic equation below: 2Fe(s) + 6H+(aq) 2Fe3+(aq) + 3H2(g) Explai ...
... 41. Under standard conditions, which metal will react with 0.1 M HCl to liberate hydrogen gas? (1) Ag (2) Au (3) Cu (4) Mg 42. Because tap water is slightly acidic, water pipes made of iron corrode over time, as shown by the balanced ionic equation below: 2Fe(s) + 6H+(aq) 2Fe3+(aq) + 3H2(g) Explai ...
Types of Chemical Reactions
... (solid, liquid, aqueous, or gas). If no reaction occurs write the words "no reaction" (or NR) instead of the products in your balanced equation and indicate why your think there was no reaction. Unless otherwise indicated, dispose of all waste in the waste container, or a beaker that you pour into t ...
... (solid, liquid, aqueous, or gas). If no reaction occurs write the words "no reaction" (or NR) instead of the products in your balanced equation and indicate why your think there was no reaction. Unless otherwise indicated, dispose of all waste in the waste container, or a beaker that you pour into t ...
PS_CHEM7_ch4 - WordPress.com
... purifying sewage. In aqueous solution, it reacts with base to form a white precipitate. (a) Write balanced total and net ionic equations for its reaction with aqueous NaOH. (b) What mass of precipitate forms when185.5 mL of 0.533 M NaOH is added to 627 mL of a solution that contains 15.8 g of alumin ...
... purifying sewage. In aqueous solution, it reacts with base to form a white precipitate. (a) Write balanced total and net ionic equations for its reaction with aqueous NaOH. (b) What mass of precipitate forms when185.5 mL of 0.533 M NaOH is added to 627 mL of a solution that contains 15.8 g of alumin ...
Buffer Solutions
... Buffers are solutions with the ability to resist the addition of strong acids or strong bases, within limits. They play an important role in chemical processes where it is essential that a fairly constant pH is maintained. In many industrial and physiological processes, specific reactions occur at s ...
... Buffers are solutions with the ability to resist the addition of strong acids or strong bases, within limits. They play an important role in chemical processes where it is essential that a fairly constant pH is maintained. In many industrial and physiological processes, specific reactions occur at s ...
Document
... Acids, bases and ionization Some reaction types: precipitation, metathesis, neutralization ...
... Acids, bases and ionization Some reaction types: precipitation, metathesis, neutralization ...
Kjeldahl Method for Determination of Nitrogen
... This significantly increases the rate of organic decomposition in the digestion mixture, shortening the length of time required for digestion. There are several precautions to keep in mind concerning salt addition. First, it is possible to raise the solution temperature of the digestion mixture too ...
... This significantly increases the rate of organic decomposition in the digestion mixture, shortening the length of time required for digestion. There are several precautions to keep in mind concerning salt addition. First, it is possible to raise the solution temperature of the digestion mixture too ...
Types of Chemical Reactions
... 2. For each of the following reactants, use the activity series to determine whether the reaction would take place or not. If no reaction takes place, write NR in the blank. If a reaction does take place, write the formulas for the products of the reaction. (Hint: If an active metal replaces the hyd ...
... 2. For each of the following reactants, use the activity series to determine whether the reaction would take place or not. If no reaction takes place, write NR in the blank. If a reaction does take place, write the formulas for the products of the reaction. (Hint: If an active metal replaces the hyd ...
Formulation - Good Hope School
... [4. In the 1970s, the effects of pollutants from power stations were being seen in the lakes of Britain and Scandinavia. The problem was due to sulphur dioxide produced, form acid rain, which contains sulphuric acid. The problem became so great that in many lakes all the fish died. In North Wales, ...
... [4. In the 1970s, the effects of pollutants from power stations were being seen in the lakes of Britain and Scandinavia. The problem was due to sulphur dioxide produced, form acid rain, which contains sulphuric acid. The problem became so great that in many lakes all the fish died. In North Wales, ...
CHEMISTRY SEC 06 SYLLABUS
... chemistry. Questions will be set in English and must be answered in English. The examination will be structured as follows: Paper I consists of a written paper and a practical component and is to be taken by all candidates registered for the examination; the practical component is assessed separatel ...
... chemistry. Questions will be set in English and must be answered in English. The examination will be structured as follows: Paper I consists of a written paper and a practical component and is to be taken by all candidates registered for the examination; the practical component is assessed separatel ...
Topic 2 notes - WordPress.com
... Acids can be neutralised by alkalis. This is called a neutralisation reaction Some crops don’t grow well if the soil is too acidic to reduce acidity of the soil, farmers can spray alkalis such as calcium carbonate, calcium oxide or calcium oxide over their fields Calcium carbonate can be used to re ...
... Acids can be neutralised by alkalis. This is called a neutralisation reaction Some crops don’t grow well if the soil is too acidic to reduce acidity of the soil, farmers can spray alkalis such as calcium carbonate, calcium oxide or calcium oxide over their fields Calcium carbonate can be used to re ...
Chapter Ten
... 10.2 Some Common Acids and Bases ► Sulfuric acid, H2SO4, is manufactured in greater quantity than any other industrial chemical. It is the acid use in the petroleum and pharmaceutical industry’s, and found in automobile batteries. ► Hydrochloric acid, HCl, is “stomach acid” in the digestive systems ...
... 10.2 Some Common Acids and Bases ► Sulfuric acid, H2SO4, is manufactured in greater quantity than any other industrial chemical. It is the acid use in the petroleum and pharmaceutical industry’s, and found in automobile batteries. ► Hydrochloric acid, HCl, is “stomach acid” in the digestive systems ...
Acid rain
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive results. Nitrogen oxides can also be produced naturally by lightning strikes and sulfur dioxide is produced by volcanic eruptions. The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and erosion of stone statues.