What gas is produced when acid is added to zinc metal? Why is the 6 HCI added ( once the solution is colorless) after the zinc metal was added?

Md Ariful Islam

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Md Ariful Islam

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  1. Hydrogen gas
  2. Metals react with acids to produce metal salt and hydrogen gas. In this reaction, addition of HCl to metal was bring the reaction with zinc metal to initiate the reaction
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Zinc and HCl react to form ZnCl2 and hydrogen gas. How many grams of H2 can be produced if 4.25g of Zinc react with 25 mL of 3.00M HCl?

25 mL x (1L/1000 mL) x (4 mol HCl/1L) x (1 mol Zn/2 mol HCl) x (65.38 g Zn/1 mol Zn) = 3.269g = ~ 3.3g of ZnParts explained25 mL...

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solid zinc metal reacts with sulfuric acid to form hydrogen gas and aqueous solution of zinc sulfate

Zn + H2SO4 → ZnSO4 + H2

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If it requires 75.0 mL of 0.500M NaOH to neutralize 165.0 mL of an HCI solution, what is the concentration of the HCI solution?

Solution:Balanced chemical equation:NaOH + HCl → NaCl + H2OAccording to stoichiometry:n(NaOH) = n(HCl)CM(NaOH) × V(NaOH) = CM(HCl) × V(HCl)Therefore,CM(HCl) = CM(NaOH) × V(NaOH) / V(HCl)CM(HCl) = (0.500 M × 75.0...

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Solid zinc metal reacts with sulfuric acid to form hydrogen gas and an aqueous solution of zinc (II) sulfate.

Zn_solid+H_2 SO_4→ZnSO_4+H_2↑ n_solid – solid zinc H_2 SO_4 – sulfuric acid ZnSO_4 – zinc (II) sulfate H_2↑ – hydrogen gas

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1) If Instead of using HCI, you used HNO3 with the same volume and concentration as HCI, would you use the same volume of NaOH to reach the endpoint? What about using H2SO4? Justify your answers

Actually, it strongly depends on what kind of concentration do you mean. If you mentioned molar concentration, then there is no deference between HCl and HNO3 in a reaction with...

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The reaction of zinc metal and hydrochloric acid produces hydrogen gas and zinc chloride. Write the balanced chemical equation

Zn+ 2HCl→H2 + ZnCl2

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which of the listed acids are weak acids: Sulfuric acid Hydrosulfuric acid Phosphouric acid Hydrobromic acid Nitric acid Nitrous acid Perchloric acid

Weak Acid from the given Acid are =1. Hydrosulfuric Acid.2. Phosphouric Acid.3. Nitrous Acid.Above All are consider as weak acid.Rest 4 Acid consider as Strong Acid ( Sulfuric Acid ,...

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Complete and balance these typical acid reactions. a). CuO(s) + HCI(aq) b). Na2CO3(s) + HCI(aq) c). NaOH(aq) + H3PO4(aq) d). Ni(OH)2(aq) + CH3COOH(aq) e). NH4HCO3(s) + CH3COOH(aq)

a). CuO(s) + 2HCI(aq) → CuCl2(s) + H2O(aq)b). Na2CO3(s) + 2HCl(aq) → H2O(aq) + CO2(g) + 2NaCl(aq)c). 3NaOH(aq) + H3PO4(aq) → Na3PO4(aq) + 3H2O(aq)d). Ni(OH)2(aq) + 2CH3COOH(aq) → Ni(CH3COO)2(aq) +...

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A chemist measures the amount of fluorine gas produced during an experiment. He finds that 6.2g of fluorine gas is produced. Calculate the number of moles of fluorine gas produced

Number of moles = mass in grams / molar mass Molar mass of fluorine, F2 = 19 g/molSince fluorine is a diatomic element, we multiply its mass by 2Thus, 19...

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calculate number of moles present in 20ml of hci solution to prepare a 0.02m hci acid

n=Cm x V = 0.02 x 0.02 = 0,0004 moles.

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