The most difficult acids riddles A list of acids related questions that are most often answered incorrectly Chemistry quiz What is exactly the pH value of distilled water?It depends on the temperature. Pure water is about 7 at 25 °C; this value decreases with increasing temperatures. At 50 °C, it is 6.55. It is also worth to note, that water that has been exposed to air is mildly acidic, because it absorbs carbon dioxide from the air.very hard 24% 1.01.018%7.07.051%10.010.05%It depends on the temperatureIt depends on the temperature24%Created by: globalquiz.org. Statistics based on 4502 answers in 4 languages »water riddles » What is the effect of nicotinic acid on human organism?It is essential for functioning. Nicotinic acid, better known as niacin or vitamin B3, has nothing in common with tobacco. Chronic lack of niacin leads to pellagra, a vitamin deficiency disease.very hard 35% it is neutralit is neutral5%It is harmful, causes cancerIt is harmful, causes cancer47%It is highly toxic, kills in 10 secondsIt is highly toxic, kills in 10 seconds12%It is essential for functioningIt is essential for functioning35%Created by: globalquiz.org. Statistics based on 10780 answers in 4 languages »tobacco riddles » What is the strongest known acid?Fluoroantimonic acid is an ionic liquid created by reacting hydrogen fluoride with antimony pentafluoride in stoichiometrically equivalent amounts. The 1:1 combination forms the strongest known superacid, 10^16 (10 quadrillion) times stronger than 100% sulfuric acid.hard 45% sulphuric acidsulphuric acid25%chloric acidchloric acid19%nitric acidnitric acid8%fluoroantimonic acidfluoroantimonic acid45%Created by: globalquiz.org. Statistics based on 7865 answers in 4 languages »chemistry riddles » Which acid is used for the production of explosives?Nitric acid is the primary reagent used for nitration - the addition of a nitro group. Nitration reactions are notably used for the production of explosives, for example synthesis of nitroglycerine, the conversion of guanidine to nitroguanidine and the conversion of toluene to trinitrotoluene (TNT).hard 52% sulphuric acidsulphuric acid28%nitric acidnitric acid52%hydrochloric acid hydrochloric acid 6%boric acidboric acid12%Created by: globalquiz.org. Statistics based on 10015 answers in 2 languages »technology riddles » What is the common name for acetylsalicylic acid?Aspirin has an antiplatelet effect. Low doses of aspirin may be given immediately after a heart attack to reduce the risk of another heart attack or of the death of cardiac tissue.average 61% LSDLSD8%vitamin Cvitamin C19%citric acidcitric acid10%aspirinaspirin61%Created by: globalquiz.org. Statistics based on 16467 answers in 2 languages »medicine riddles » Which acid causes the sourness of green apples?Malic acid is more sour than citric acid, and is the source of extreme tartness in so-called extreme candy. Malic acid occurs naturally in all fruits and many vegetables.average 63% citric acidcitric acid21%malic acidmalic acid63%lactic acidlactic acid6%formic acidformic acid8%Created by: Kasia. Statistics based on 25238 answers in 2 languages »sweets riddles » What is the main industrial use of sulfuric acid and nitric acid?Fertilizers production. World production of sulfuric acid in 2004 was about 180 million tonnes. About 60% of this amount is consumed for fertilizers, particularly superphosphates, ammonium phosphate and ammonium sulfates. Similarily, 75–80% of the 26M tons of nitric acid produced annually is used to produce ammonium nitrate fertilizer.average 63% explosives productionexplosives production15%oil refiningoil refining7%fertilizers productionfertilizers production63%synthesis of plasticssynthesis of plastics13%Created by: Monica Stiller. Statistics based on 9254 answers in 2 languages »chemistry riddles » Which acid mostly contributes to acid rains?Sulfuric acid. The most important gas which leads to acidification is sulfur dioxide, coming from fossil fuel combustion and industry (and, in lesser amounts, from volcanoes and wildfires). In recent years, emissions of nitrogen oxides which are oxidized to form nitric acid are of increasing importance due to stricter controls on emissions of sulfur containing compounds. easy 77% hydrochloric acidhydrochloric acid5%sulfuric acidsulfuric acid77%nitric acidnitric acid14%citric acidcitric acid1%Created by: Cleo. Statistics based on 12558 answers in 4 languages »ecology riddles » Play chemistry quiz and see all the questions.