Important Questions of Some Basic Concepts of Chemistry Chemistry | Zigya

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 Multiple Choice QuestionsLong Answer Type

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171.

Explain the following terms with examples:
1. Skeleton equation
2. Balanced equation
3. Thermochemical equation.

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 Multiple Choice QuestionsShort Answer Type

172.

What do you mean by 'balancing a chemical equation'? On what principle the balancing of a chemical equation is based?

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 Multiple Choice QuestionsLong Answer Type

173.

How are chemical equations balanced? discuss any two.

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174.

Balance the following equations:
1. space space space straight H subscript 3 PO subscript 3 space space space rightwards arrow space space space space straight H subscript 3 PO subscript 4 plus PH subscript 3
2. space space space Ca plus straight H subscript 2 straight O space space rightwards arrow space space Ca left parenthesis OH right parenthesis subscript 2 plus straight H subscript 2

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175. Translate the following equations into the language of chemistry and balance by hit and trial method:
Magnesium nitride + Water  rightwards arrow   Magnesium hydroxide + Ammonia
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176.

Balance the following skeleton equation by hit and trial method:
Fe subscript 3 straight O subscript 4 plus straight H subscript 2 space rightwards arrow space Fe plus straight H subscript 2 straight O

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177.

Balance the following skeleton equation by hit and trial method:
Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3 plus space NH subscript 3 plus straight H subscript 2 straight O space rightwards arrow space space space Fe left parenthesis OH right parenthesis subscript 3 plus left parenthesis NH subscript 4 right parenthesis subscript 2 SO subscript 4

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178.

Balance the following skeleton equation:

NH subscript 3 NI subscript 3 space rightwards arrow space space straight N subscript 2 plus straight I subscript 2 plus NH subscript 4 straight I

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179.

Balance the following skeleton equation:

KMnO subscript 4 plus HCl space rightwards arrow space KCl plus MnCl subscript 2 plus straight H subscript 2 straight O plus Cl subscript 2

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180.

Balance the given skeletion equation straight P subscript 4 plus HNO subscript 3 space rightwards arrow space space straight H subscript 3 PO subscript 4 plus NO subscript 2 plus straight H subscript 2 straight O by partial equation method.

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