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How many grams of NaOH are formed from reacting 120g sodium carbonate with excess calcium hydroxide?
Wiki User
∙ 14y ago
Write out the equation, and remember to balance each side.
Na2CO3 + Ca(OH)2 --> 2NaOH + CaCO3
Molecular Weights
Na2CO3: 106 grams/mole
NaOH: 40 grams/mole
Always convert your reagents into moles.
(120g Na2CO3) x (1 mole Na2CO3/106 grams Na2CO3) = 1.132 moles
According to the balanced equation, 1 molecule of Na2CO3 generates 2 molecules of NaOH.
(1.132 moles Na2CO3) x (2 moles NaOH/1 mole Na2CO3) = 2.264 moles NaOH
Now determine the number of grams from 2.264 moles of NaOH.
(2.264 moles NaOH) x (40 grams/ 1 mole NaOH) = 90.57 grams NaOH formed.
To prevent rounding off too many times, carry out the dimensional analysis in one step:
(120g Na2CO3) x (1 mole Na2CO3/106 grams Na2CO3) x
(2 moles NaOH/1 mole Na2CO3) x (40 grams/ 1 mole NaOH) = 90.57 grams NaOH
Wiki User
∙ 14y ago
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A mass of 21.5 grams of calcium hydroxide reacts with an excess of phosphoric acid What mass of calcium phosphate could be recovered from solution?
31.6grams
What happens when carbon dioxide gas is passed through calcium hydroxide solution?
When carbon dioxide gas is passed/bubbled through aqueous calcium hydroxide (also known as 'limewater'), a white precipitate will be formed. This means that the solution will turn cloudy/milky due to the formation of that white precipitate.Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)The precipitate, calcium carbonate, is only sparingly soluble in water. It will exist as a suspension in the resulting solution.But when excess carbon dioxide is added, this reaction takes place instead:CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)The calcium carbonate undergoes further reaction with water and carbon dioxide to form calcium bicarbonate (or calcium hydrogen carbonate), which is soluble. Thus the precipitate appears to 'disappear' or 'dissolve'. Thus, a colourless solution is formed.----- Other answers -----Water is added to give calcium hydroxide, and carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate (PCC):if carbon dioxide is passed through it it will turn cloudy and if it is done for to long then it will turn colourless.
How do you Convert ammonium nitrate to anhydrous ammonia?
since ammonium nitrate decomposes on heating so ammonium nitrate is covered with excess of calcium hydroxide with some water and then heated to get ammonia
How many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine with excess methane?
384.5g
Aqueous phosphoric acid and aqueous calcium hydroxide react form solid calcium phosphate and water what is the balanced chemical equation for this reaction?
3 Ca(OH)2 + 2 H3PO4 --> Ca3(PO4)2 +6 H2O Note: Ca(OH)2 is not very soluble in water but enough to react with the acid, but may be some excess will be needed
What happens when excess of CO2 is passed through lime vessel?
If you think to calcium hydroxide, after the reaction with carbon dioxide calcium carbonate (CaCO3) is obtained.
Why is calcium carbonate used to neutralize acidic water instead of calcium oxide?
Because if you over correct, excess calcium carbonate is all but harmless, whilst excess sodium hydroxide can be corrosive and toxic.
What is the Balanced equation for calcium carbonate and hydrochloric acid reacting?
CaCO3 + HCl --> CaHCO3 or with excess of HCl CaCO3 + 2HCl --> CaCl2 +CO2 + H2O
What does calcium carbonate do in rennie tablets?
Calcium carbonate is for neutralising the excess of acid in the stomach.
What elements ease an upset stomach?
Most medications include antacids, which are weak bases (e.g. calcium carbonate, aluminum hydroxide, magnesium hydroxide) to neutralize excess stomach acid.
Calcium carbonate can be used as an antacid to treat excess stomach acidity What type of substance is calcium carbonate?
base.
Anti-acid indigestion tablets contain magnesium hydroxide or calcium carbonate. How do they work?
Both of these substances are alkaline and they react with excess acid in the stomach to produce a Calcium or Magnesium salt solution and Carbon dioxide gas.
One mole of calcium phosphide on reaction with excess of water gives what?
Calcium hydroxide and Phosphine gas
What would happen when Excess of calcium hydroxide in acidic soil?
PH increase
Why does milk disappear when carbon dioxide is passed in access?
When carbon dioxide is passes into lime water (a solution of calcium hydroxide) an insoluble precipitate of calcium carbonate is produced this is composed of tiny particles that cause the milkiness.Ca(OH)2 +CO2 -> CaCO3 +H2OWhen excess carbon dioxide is passed in this produces some carbonic acid, H2CO3 that reacts with the calcium carbonate to produce soluble calcium hydrogen carbonate, (calcium bicarbonate).CO2 +H2O -> H2CO3H2CO3 + CaCO3 -> Ca(HCO3)2
What is the main ingredient in Rolaids?
The main ingredients in Rolaids are calcium carbonate and magnesium hydroxide. Either one of them can help neutralize excess acid in the stomach. When the acid goes back up the esophagus, it can result in heartburn.
How excess acidity can be treated using calcium hydroxide?
Calcium hydroxide, Ca(OH)2 is a base and neutralizes acid. When a solution is acidic it contains excess hydrogen (H+) ions, calcium produces the hydroxide ion (OH-) in water, which reacts wit h the H+ ions to produce water. OH- + H+ --> H2O
