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 26% 1.01.018%7.07.049%10.010.05%It depends on the temperatureIt depends on the temperature26%Created by: globalquiz.org. Statistics based on 3342 answers in 4 languages »water riddles » What effect on human organism does nicotinic acid have?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 36% it is neutralit is neutral4%It is harmful, causes cancerIt is harmful, causes cancer45%It is highly toxic, kills in 10 secondsIt is highly toxic, kills in 10 seconds12%It is essential for functioningIt is essential for functioning36%Created by: globalquiz.org. Statistics based on 6641 answers in 4 languages »nicotine 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 46% sulphuric acidsulphuric acid25%chloric acidchloric acid19%nitric acidnitric acid9%fluoroantimonic acidfluoroantimonic acid46%Created by: globalquiz.org. Statistics based on 5538 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 53% sulphuric acidsulphuric acid27%nitric acidnitric acid53%hydrochloric acid hydrochloric acid 6%boric acidboric acid12%Created by: globalquiz.org. Statistics based on 6721 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 62% LSDLSD8%vitamin Cvitamin C18%citric acidcitric acid10%aspirinaspirin62%Created by: globalquiz.org. Statistics based on 11267 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 64% citric acidcitric acid21%malic acidmalic acid64%lactic acidlactic acid6%formic acidformic acid8%Created by: Kasia. Statistics based on 16621 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 64% explosives productionexplosives production14%oil refiningoil refining7%fertilizers productionfertilizers production64%synthesis of plasticssynthesis of plastics13%Created by: Monica Stiller. Statistics based on 5942 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 acid15%citric acidcitric acid1%Created by: Cleo. Statistics based on 8614 answers in 4 languages »ecology riddles » Play chemistry quiz and see all the questions.