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CBSE Class 11-science Answered

oxidation State of cr2o-²7
Asked by snehadethe45 | 22 Oct, 2020, 11:31: AM
answered-by-expert Expert Answer
Suppose oxidation number on Cr=x
charge on dichromate ion=-2
2 x minus 2 left parenthesis 7 right parenthesis equals negative 2 2 x minus 14 equals negative 2 2 x equals negative 2 plus 14 2 x equals 12 x equals plus 6
 
Answered by Ravi | 25 Oct, 2020, 06:33: PM

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CBSE 11-science - Chemistry
114 and 115 plzzz
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Asked by Kattaithihaas | 24 Jul, 2022, 06:03: PM
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CBSE 11-science - Chemistry
oxidation State of cr2o-²7
Asked by snehadethe45 | 22 Oct, 2020, 11:31: AM
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CBSE 11-science - Chemistry
(i) Balance the following equations by oxidation number method: (1) Cu + HNO3 → Cu (NO3)2 + NO2 + H2O) (2) K2Cr2O7 + HCl → KCl + CrCl3 + H2O + Cl2 (ii) Give reasons for the following: (1) HNO3 acts only as an oxidising agent while HNO2 can act both as a reducing agent and an oxidising agent. (2) Chlorine liberates iodine from KI solution. How will you convert the following? (Give balanced equation.) (1) Sodium acetate to methane Find the oxidation number of: (1) S in Na2S4 O6 2) S in S subscript 4 space O subscript 6 superscript 2 minus end superscript
Asked by defence221175 | 17 Feb, 2020, 06:10: PM
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CBSE 11-science - Chemistry
a) Identify the substance oxidised, substance reduced, oxidising agent and reducing agent in the following reaction:  M n O subscript 2 space plus 4 space H C l space minus negative greater than space M n C l subscript 2 space plus 2 H subscript 2 O plus C l subscript 2 b) In the reaction Z n plus C u S O subscript 4 minus negative greater than Z n S O subscript 4 plus space C u, what is oxidised and what is reduced? 
Asked by adalroshan2464 | 12 May, 2019, 03:19: PM
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CBSE 11-science - Chemistry
Put the formula making me understanding all that
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Asked by vishakhachandan026 | 16 Apr, 2019, 11:39: AM
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CBSE 11-science - Chemistry
Give the oxidation number of all elements in CH3COOH? In my book the oxidation number of oxygen in this compound is -1? How
Asked by govtsecschoolnayaganv051 | 06 Aug, 2018, 06:11: PM
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CBSE 11-science - Chemistry
The oxidation number of Fe in Fe3O4 is fractional. Why?
Asked by Topperlearning User | 15 Apr, 2015, 02:41: PM
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CBSE 11-science - Chemistry
Calculate the Oxidation number of Sulphur in S2O82- ion.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Chemistry
Calculate the oxidation number of S in Na2S4O6.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Chemistry
Can the oxidation number of an element be zero?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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