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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Balance the Following Chemical Equation : Na2co3 + Hcl → Naci + H2o + Co2 - Chemistry

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प्रश्न

Balance the following chemical equation :

Na2CO3 + HCl  →  NaCI + H2O + CO2

एका वाक्यात उत्तर

उत्तर

Na2CO3 + 2HCl  →  2NaCl + H2O + CO2

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पाठ 5: Language of Chemistry - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 5 Language of Chemistry
Exercise | Q 5.2

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Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSOand NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?

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